Hi everyone. Electronics is something I'm interested in but have no clue where to begin learning. Do I go get one of those old radio shack kits and start doing the little projects they have? I'm pretty amazed at the things on here and would like to at least start learning some basics. Thanks for the help.
Don Hersey wrote:
"Digital logic and digital circuits are very straightforward, because logic gates are unidirectional so it's easy to see the flow through a circuit."
With respect, this statement is sometimes true, sometimes not:
Combinational logic - Wikipedia, the free encyclopedia
Sequential logic - Wikipedia, the free encyclopedia
It is possible to create a pseudo-random-number-generator out of a shift register that could never be simulated, presuming that our universe is limited in time and space.
Well, with pseudo-random at least it's repeating, and you can probe internal points and see what it's doing and observe the cause-effect relationship. With analog, you can create a thermal true random voltage generator from a resistor, which will never repeat, and if you try to probe it the behavior changes because of probe capacitance: a "Heisenbug".
With digital, your challenge is to provide signal and power integrity and meet timing requirements so that you don't need to consider analog misbehavior. Sometimes this is impossible -- e.g., with metastability -- but at least you're not faced with the classic analog problem:
An oscillator won't. An amplifier will.
Don Hersey wrote:
"Digital logic and digital circuits are very straightforward, because logic gates are unidirectional so it's easy to see the flow through a circuit."
With respect, this statement is sometimes true, sometimes not:
Combinational logic - Wikipedia, the free encyclopedia
Sequential logic - Wikipedia, the free encyclopedia
It is possible to create a pseudo-random-number-generator out of a shift register that could never be simulated, presuming that our universe is limited in time and space.
Well, with pseudo-random at least it's repeating, and you can probe internal points and see what it's doing and observe the cause-effect relationship. With analog, you can create a thermal true random voltage generator from a resistor, which will never repeat, and if you try to probe it the behavior changes because of probe capacitance: a "Heisenbug".
With digital, your challenge is to provide signal and power integrity and meet timing requirements so that you don't need to consider analog misbehavior. Sometimes this is impossible -- e.g., with metastability -- but at least you're not faced with the classic analog problem:
An oscillator won't. An amplifier will.
