https://community.element14.com/challenges-projects/element14-presents/thelearningcircuit/w/documents/4523/how-to-drive-a-7-segment-display----the-learning-circuit-53en-USTelligent Community 12https://community.element14.com/challenges-projects/element14-presents/thelearningcircuit/w/documents/4523/how-to-drive-a-7-segment-display----the-learning-circuit-53Sun, 01 Sep 2019 07:24:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:fc37362b-e133-4f0b-b021-51cb313719ecMatthttps://community.element14.com/challenges-projects/element14-presents/thelearningcircuit/w/documents/4523/how-to-drive-a-7-segment-display----the-learning-circuit-53#commentsCurrent Revision posted to Documents by Matt on 9/1/2019 7:24:00 AM<br /> <div style="background:#ffffff;padding:14px 16px 16px 18px;margin:0;vertical-align:top;border:1px solid #dadada;"><div style="float:left;display:inline-block;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/" data-e14adj="t"><img alt="image" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /></a></div><div style="display:inline-block;vertical-align:top;width:70%;"><span style="font-size:18px;font-weight:bold;">How to Drive a 7-segment Display</span><p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/thelearningcircuit/" data-e14adj="t">The Learning Circuit</a></span> <strong>|</strong> <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/" data-e14adj="t">element14 presents</a> <strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/" data-e14adj="t">Project Videos</a></p></div></div><p style="margin:0;padding:0px;">&nbsp;</p><p style="margin:0;"></p><span><a href="https://www.youtube.com/watch?v=XCJqoae4hgY">www.youtube.com/watch</a></span><p style="margin:0;"></p><p style="margin:0;padding:0px;">&nbsp;</p><p style="margin:0;border:1px solid #b8d7e5;background-color:#e9f6fc;padding:8px;max-width:744px;"><span style="color:#000000;font-family:&#39;Open Sans&#39;, Arial, sans-serif;text-align:justify;">Karen walks through how to use one type of decoder in a circuit, a BCD to 7-segment. While this circuit would typically use a microcontroller to provide the four necessary input signals, Karen’s circuit uses 4 switches to allow the user to manually input the BCD number. This circuit is helpful for practicing counting in binary as well as learning how to drive a 7-segment display. This circuit uses a common-anode 7-segment LED display that is driven by an <span><span class="e14-init-shown" id="addProduct-4FcjWtET-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=1739829&amp;nsku=60K6887&amp;COM=noscript" target="_blank" data-e14adj="t"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=1739829&amp;nsku=60K6887&amp;COM=noscript" target="_blank" data-e14adj="t">SN74LS47N</a></span><span class="e14-init-hidden" id="addProduct-4FcjWtET-unlinked">SN74LS47N</span></span> decoder. If you would like to create a circuit using a common-cathode LED display, a 74LS48 decoder could be used and the power would need to be flipped. Not covered in this or the previous episode, but a CMOS <a class="jive-link-external-small" href="https://www.datasheets.com/details/cd4543bmtg4-texas-instruments-30660733?utm_medium=PartNumber&amp;utm_source=electronics-tutorials&amp;utm_term=CD4543" rel="noopener noreferrer nofollow" target="_blank" data-e14adj="t">CD4543</a> could be used for driving liquid crystal display (LCD) types. </span></p><p style="margin:0;padding:0px;">&nbsp;</p><table border="1" class="jiveBorder mce-item-table" style="border:1px solid #ffffff;width:100%;"><tbody><tr><td style="border:1px solid black;border:1px solid #ffffff;padding:6px;"><span><a href="https://community.element14.com/resized-image/__size/184x252/__key/communityserver-wikis-components-files/00-00-00-03-35/2804.contentimage_5F00_143255.png"><img loading="lazy" alt="image" src="https://community-storage.element14.com/communityserver-components-secureimagefileviewer/communityserver/wikis/components/files/00/00/00/03/35/2804.contentimage_143255.png-184x251.png?sv=2016-05-31&amp;sr=b&amp;sig=N49v1JZv1IM0yjYLNNvDmShzJ6D0JvUeH6FQE2o2Lvc%3D&amp;se=2026-05-27T23%3A59%3A59Z&amp;sp=r&amp;_=DCT0XEYm5pZtFOeiO62zlw==" style="max-height: 251px;max-width: 184px;" /></a></span></td><td style="border:1px solid black;border:1px solid #ffffff;padding:6px;"><span><a href="https://community.element14.com/resized-image/__size/538x254/__key/communityserver-wikis-components-files/00-00-00-03-35/0741.contentimage_5F00_143256.png"><img loading="lazy" alt="image" src="https://community-storage.element14.com/communityserver-components-secureimagefileviewer/communityserver/wikis/components/files/00/00/00/03/35/0741.contentimage_143256.png-538x254.png?sv=2016-05-31&amp;sr=b&amp;sig=u%2FpW0ErjqUvOaHA9kwz8KxMdX5I01NhWWwuvLi185FE%3D&amp;se=2026-05-27T23%3A59%3A59Z&amp;sp=r&amp;_=0W9QqCIypmD70eLo0fUzYw==" style="max-height: 254px;max-width: 538px;" /></a></span></td></tr></tbody></table><p style="margin:0;padding:0px;">&nbsp;</p><p style="margin:0;padding:0px;">&nbsp;</p><h2><span style="color:#3334ca;">Bill of Material:</span></h2><p style="margin:0;padding:0px;">&nbsp;</p><p style="margin:0;padding:0px;">&nbsp;</p><table border="1" class="jiveBorder mce-item-table" style="border:1px solid #C6C6C6;"><thead><tr><th style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;color:#505050;background-color:#f2f2f2;text-align:left;">Product Name</th><th style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;color:#505050;background-color:#f2f2f2;text-align:left;">Manufacturer</th><th style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;color:#505050;background-color:#f2f2f2;text-align:left;">Quantity</th><th style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;color:#505050;background-color:#f2f2f2;text-align:left;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-n2heNaEm-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=1082284~4,1208853~4,1003293~1,1099893~1,2371156~12,1739829~1,1182587~1,2768275~1,2802331~1,2819352~1,2344023~4&amp;nsku=96C6577~4,97K4136~4,09J9478~1,78R4867~1,71M1021~12,60K6887~1,82K7788~1,22AC8320~1,97W4638~1,11X6404~1,68Y6408~4&amp;COM=noscript" target="_blank" data-e14adj="t"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=1082284~4,1208853~4,1003293~1,1099893~1,2371156~12,1739829~1,1182587~1,2768275~1,2802331~1,2819352~1,2344023~4&amp;nsku=96C6577~4,97K4136~4,09J9478~1,78R4867~1,71M1021~12,60K6887~1,82K7788~1,22AC8320~1,97W4638~1,11X6404~1,68Y6408~4&amp;COM=noscript" target="_blank" data-e14adj="t">Buy Kit</a></span><span class="e14-init-hidden" id="addProduct-n2heNaEm-unlinked">Buy Kit</span></span></th></tr></thead><tbody><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Slide Switch, SPDT, On-On, 2.54mm, Through Hole</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">APEM</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">4</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-7CMm8jQN-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=1082284~4&amp;nsku=96C6577~4&amp;COM=noscript" target="_blank" data-e14adj="t"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=1082284~4&amp;nsku=96C6577~4&amp;COM=noscript" target="_blank" data-e14adj="t">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-7CMm8jQN-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Red LED, Through Hole, 5mm, 20 mA, 2.1 V</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">LED Technology</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">4</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-gkhBB96a-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=1208853~4&amp;nsku=97K4136~4&amp;COM=noscript" target="_blank" data-e14adj="t"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=1208853~4&amp;nsku=97K4136~4&amp;COM=noscript" target="_blank" data-e14adj="t">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-gkhBB96a-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">7 Segment LED Display, InfoVue, Red, 10 mA, 1.8 V</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">LUMEX</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">1</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-eQyVvldH-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=1003293~1&amp;nsku=09J9478~1&amp;COM=noscript" target="_blank" data-e14adj="t"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=1003293~1&amp;nsku=09J9478~1&amp;COM=noscript" target="_blank" data-e14adj="t">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-eQyVvldH-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Through Hole Resistor, 1 kohm, 500 mW, ± 1%</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">TT ELECTRONICS / WELWYN</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">1</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-LoedTg83-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=1099893~1&amp;nsku=78R4867~1&amp;COM=noscript" target="_blank" data-e14adj="t"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=1099893~1&amp;nsku=78R4867~1&amp;COM=noscript" target="_blank" data-e14adj="t">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-LoedTg83-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Through Hole Resistor, 470 ohm, 500 mW, ± 5%</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">VISHAY</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">12</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-vMkMOHIm-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=2371156~12&amp;nsku=71M1021~12&amp;COM=noscript" target="_blank" data-e14adj="t"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=2371156~12&amp;nsku=71M1021~12&amp;COM=noscript" target="_blank" data-e14adj="t">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-vMkMOHIm-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">SN74LS47N-BCD to 7 Segment Decoder / Driver, LS Family, 7 Output, 3.2 mA, 4.75 V to 5.25 V, DIP-16</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">TEXAS INSTRUMENTS</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">1</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-iGPLBLm0-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=1739829~1&amp;nsku=60K6887~1&amp;COM=noscript" target="_blank" data-e14adj="t"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=1739829~1&amp;nsku=60K6887~1&amp;COM=noscript" target="_blank" data-e14adj="t">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-iGPLBLm0-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">IC &amp; Component Socket, 16 Contacts, DIP Socket, 2.54 mm</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Multicomp</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">1</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-BrMeJy6V-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=1182587~1&amp;nsku=82K7788~1&amp;COM=noscript" target="_blank" data-e14adj="t"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=1182587~1&amp;nsku=82K7788~1&amp;COM=noscript" target="_blank" data-e14adj="t">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-BrMeJy6V-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Prototype Board, Phenolic, 55 x 40 grid, 1.6 mm, 160 mm, 115 mm</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Multicomp</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">1</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-y9US8O03-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=2768275~1&amp;nsku=22AC8320~1&amp;COM=noscript" target="_blank" data-e14adj="t"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=2768275~1&amp;nsku=22AC8320~1&amp;COM=noscript" target="_blank" data-e14adj="t">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-y9US8O03-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Terminal Block, Header, 2.54 mm</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">MCM</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">1</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-GuxIxgdU-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=2802331~1&amp;nsku=97W4638~1&amp;COM=noscript" target="_blank" data-e14adj="t"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=2802331~1&amp;nsku=97W4638~1&amp;COM=noscript" target="_blank" data-e14adj="t">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-GuxIxgdU-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">BATTERY HOLDER 4 X AA, 6V, w/ switch, wire leads</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">OSEPP</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">1</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-ephR7wPd-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=2819352~1&amp;nsku=11X6404~1&amp;COM=noscript" target="_blank" data-e14adj="t"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=2819352~1&amp;nsku=11X6404~1&amp;COM=noscript" target="_blank" data-e14adj="t">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-ephR7wPd-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">AA battery</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Pro-elec</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">4</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-gZyJp2sD-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=2344023~4&amp;nsku=68Y6408~4&amp;COM=noscript" target="_blank" data-e14adj="t"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=2344023~4&amp;nsku=68Y6408~4&amp;COM=noscript" target="_blank" data-e14adj="t">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-gZyJp2sD-unlinked">Buy Now</span></span></td></tr></tbody></table><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: red led, lcd, e14presents_makerkaren, through hole resistor, 7 segment display, slide switch, aa battery, prototype board, terminal block, liquid crystal display, battery holder, spdt</div> https://community.element14.com/challenges-projects/element14-presents/thelearningcircuit/w/documents/4523/how-to-drive-a-7-segment-display----the-learning-circuit-53/revision/1Thu, 24 Sep 2020 16:30:17 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:fc37362b-e133-4f0b-b021-51cb313719ectariq.ahmadhttps://community.element14.com/challenges-projects/element14-presents/thelearningcircuit/w/documents/4523/how-to-drive-a-7-segment-display----the-learning-circuit-53#commentsRevision 1 posted to Documents by tariq.ahmad on 9/24/2020 4:30:17 PM<br /> <div style="background:#ffffff;padding:14px 16px 16px 18px;margin:0;vertical-align:top;border:1px solid #dadada;"><div style="float:left;display:inline-block;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/"><img alt="image" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /></a></div><div style="display:inline-block;vertical-align:top;width:70%;"><span style="font-size:18px;font-weight:bold;">How to Drive a 7-segment Display</span><p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/thelearningcircuit/">The Learning Circuit</a></span> <strong>|</strong> <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/">element14 presents</a> <strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/">Project Videos</a></p></div></div><p style="margin:0;padding:0px;">&nbsp;</p><p style="margin:0;"></p><span><a href="https://www.youtube.com/watch?v=XCJqoae4hgY">www.youtube.com/watch</a></span><p style="margin:0;"></p><p style="margin:0;padding:0px;">&nbsp;</p><p style="margin:0;border:1px solid #b8d7e5;background-color:#e9f6fc;padding:8px;max-width:744px;"><span style="color:#000000;font-family:&#39;Open Sans&#39;, Arial, sans-serif;text-align:justify;">Karen walks through how to use one type of decoder in a circuit, a BCD to 7-segment. While this circuit would typically use a microcontroller to provide the four necessary input signals, Karen’s circuit uses 4 switches to allow the user to manually input the BCD number. This circuit is helpful for practicing counting in binary as well as learning how to drive a 7-segment display. This circuit uses a common-anode 7-segment LED display that is driven by an <span><span class="e14-init-shown" id="addProduct-4FcjWtET-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=1739829&amp;nsku=60K6887&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=1739829&amp;nsku=60K6887&amp;COM=noscript" target="_blank">SN74LS47N</a></span><span class="e14-init-hidden" id="addProduct-4FcjWtET-unlinked">SN74LS47N</span></span> decoder. If you would like to create a circuit using a common-cathode LED display, a 74LS48 decoder could be used and the power would need to be flipped. Not covered in this or the previous episode, but a CMOS <a class="jive-link-external-small" href="https://www.datasheets.com/details/cd4543bmtg4-texas-instruments-30660733?utm_medium=PartNumber&amp;utm_source=electronics-tutorials&amp;utm_term=CD4543" rel="nofollow ugc noopener" target="_blank">CD4543</a> could be used for driving liquid crystal display (LCD) types. </span></p><p style="margin:0;padding:0px;">&nbsp;</p><table border="1" class="jiveBorder mce-item-table" style="border:1px solid #ffffff;width:100%;"><tbody><tr><td style="border:1px solid black;border:1px solid #ffffff;padding:6px;"><span><a href="https://community.element14.com/resized-image/__size/184x252/__key/communityserver-wikis-components-files/00-00-00-03-35/2804.contentimage_5F00_143255.png"><img loading="lazy" alt="image" src="https://community-storage.element14.com/communityserver-components-secureimagefileviewer/communityserver/wikis/components/files/00/00/00/03/35/2804.contentimage_143255.png-184x251.png?sv=2016-05-31&amp;sr=b&amp;sig=N49v1JZv1IM0yjYLNNvDmShzJ6D0JvUeH6FQE2o2Lvc%3D&amp;se=2026-05-27T23%3A59%3A59Z&amp;sp=r&amp;_=DCT0XEYm5pZtFOeiO62zlw==" style="max-height: 251px;max-width: 184px;" /></a></span></td><td style="border:1px solid black;border:1px solid #ffffff;padding:6px;"><span><a href="https://community.element14.com/resized-image/__size/538x254/__key/communityserver-wikis-components-files/00-00-00-03-35/0741.contentimage_5F00_143256.png"><img loading="lazy" alt="image" src="https://community-storage.element14.com/communityserver-components-secureimagefileviewer/communityserver/wikis/components/files/00/00/00/03/35/0741.contentimage_143256.png-538x254.png?sv=2016-05-31&amp;sr=b&amp;sig=u%2FpW0ErjqUvOaHA9kwz8KxMdX5I01NhWWwuvLi185FE%3D&amp;se=2026-05-27T23%3A59%3A59Z&amp;sp=r&amp;_=0W9QqCIypmD70eLo0fUzYw==" style="max-height: 254px;max-width: 538px;" /></a></span></td></tr></tbody></table><p style="margin:0;padding:0px;">&nbsp;</p><p style="margin:0;padding:0px;">&nbsp;</p><h2><span style="color:#3334ca;">Bill of Material:</span></h2><p style="margin:0;padding:0px;">&nbsp;</p><p style="margin:0;padding:0px;">&nbsp;</p><table border="1" class="jiveBorder mce-item-table" style="border:1px solid #C6C6C6;"><thead><tr><th style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;color:#505050;background-color:#f2f2f2;text-align:left;">Product Name</th><th style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;color:#505050;background-color:#f2f2f2;text-align:left;">Manufacturer</th><th style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;color:#505050;background-color:#f2f2f2;text-align:left;">Quantity</th><th style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;color:#505050;background-color:#f2f2f2;text-align:left;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-n2heNaEm-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=1082284~4,1208853~4,1003293~1,1099893~1,2371156~12,1739829~1,1182587~1,2768275~1,2802331~1,2819352~1,2344023~4&amp;nsku=96C6577~4,97K4136~4,09J9478~1,78R4867~1,71M1021~12,60K6887~1,82K7788~1,22AC8320~1,97W4638~1,11X6404~1,68Y6408~4&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=1082284~4,1208853~4,1003293~1,1099893~1,2371156~12,1739829~1,1182587~1,2768275~1,2802331~1,2819352~1,2344023~4&amp;nsku=96C6577~4,97K4136~4,09J9478~1,78R4867~1,71M1021~12,60K6887~1,82K7788~1,22AC8320~1,97W4638~1,11X6404~1,68Y6408~4&amp;COM=noscript" target="_blank">Buy Kit</a></span><span class="e14-init-hidden" id="addProduct-n2heNaEm-unlinked">Buy Kit</span></span></th></tr></thead><tbody><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Slide Switch, SPDT, On-On, 2.54mm, Through Hole</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">APEM</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">4</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-7CMm8jQN-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=1082284~4&amp;nsku=96C6577~4&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=1082284~4&amp;nsku=96C6577~4&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-7CMm8jQN-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Red LED, Through Hole, 5mm, 20 mA, 2.1 V</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">LED Technology</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">4</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-gkhBB96a-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=1208853~4&amp;nsku=97K4136~4&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=1208853~4&amp;nsku=97K4136~4&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-gkhBB96a-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">7 Segment LED Display, InfoVue, Red, 10 mA, 1.8 V</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">LUMEX</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">1</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-eQyVvldH-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=1003293~1&amp;nsku=09J9478~1&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=1003293~1&amp;nsku=09J9478~1&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-eQyVvldH-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Through Hole Resistor, 1 kohm, 500 mW, ± 1%</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">TT ELECTRONICS / WELWYN</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">1</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-LoedTg83-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=1099893~1&amp;nsku=78R4867~1&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=1099893~1&amp;nsku=78R4867~1&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-LoedTg83-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Through Hole Resistor, 470 ohm, 500 mW, ± 5%</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">VISHAY</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">12</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-vMkMOHIm-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=2371156~12&amp;nsku=71M1021~12&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=2371156~12&amp;nsku=71M1021~12&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-vMkMOHIm-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">SN74LS47N-BCD to 7 Segment Decoder / Driver, LS Family, 7 Output, 3.2 mA, 4.75 V to 5.25 V, DIP-16</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">TEXAS INSTRUMENTS</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">1</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-iGPLBLm0-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=1739829~1&amp;nsku=60K6887~1&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=1739829~1&amp;nsku=60K6887~1&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-iGPLBLm0-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">IC &amp; Component Socket, 16 Contacts, DIP Socket, 2.54 mm</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Multicomp</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">1</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-BrMeJy6V-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=1182587~1&amp;nsku=82K7788~1&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=1182587~1&amp;nsku=82K7788~1&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-BrMeJy6V-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Prototype Board, Phenolic, 55 x 40 grid, 1.6 mm, 160 mm, 115 mm</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Multicomp</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">1</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-y9US8O03-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=2768275~1&amp;nsku=22AC8320~1&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=2768275~1&amp;nsku=22AC8320~1&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-y9US8O03-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Terminal Block, Header, 2.54 mm</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">MCM</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">1</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-GuxIxgdU-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=2802331~1&amp;nsku=97W4638~1&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=2802331~1&amp;nsku=97W4638~1&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-GuxIxgdU-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">BATTERY HOLDER 4 X AA, 6V, w/ switch, wire leads</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">OSEPP</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">1</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-ephR7wPd-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=2819352~1&amp;nsku=11X6404~1&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=2819352~1&amp;nsku=11X6404~1&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-ephR7wPd-unlinked">Buy Now</span></span></td></tr><tr><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">AA battery</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">Pro-elec</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;">4</td><td style="border:1px solid black;border:1px solid #C6C6C6;padding:6px;"><span><span class="e14-init-shown e14-product-link-buynow" id="addProduct-gZyJp2sD-linked" style="white-space:nowrap;"><a class="jive-link-product-addtolist" href="https://www.element14.com/community/view-product.jspa?fsku=2344023~4&amp;nsku=68Y6408~4&amp;COM=noscript" target="_blank"><span class="pf-widget-map pf-productlink-cart-icon"></span></a><a class="jive-link-product pf-embedded-product-link" href="https://www.element14.com/community/view-product.jspa?fsku=2344023~4&amp;nsku=68Y6408~4&amp;COM=noscript" target="_blank">Buy Now</a></span><span class="e14-init-hidden" id="addProduct-gZyJp2sD-unlinked">Buy Now</span></span></td></tr></tbody></table><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: red led, lcd, e14presents_makerkaren, through hole resistor, 7 segment display, slide switch, aa battery, prototype board, terminal block, liquid crystal display, battery holder, spdt</div>