Digital electronics is the heart of modern technical life.


Contents


Digital electronics introduction — Simplicity, abstraction, discipline, intent

Logic

Logic — basic gates

Universal gates — your first logic puzzle

DeMorgan’s theorem

Simplification

  • Karnaugh map (Car’-naw)
  • Gray code - distance 1 code, solves the Tower of Hanoi puzzle

Bits as commands

Assertion

Bits as symbols

  • $2^n$
  • distance

Bits as numbers

  • Binary numbers, octal hex
  • Addition
  • Subtraction

Bits as memory

  • Basic digital memory - cross-coupled inverters
  • SR flip-flop with NAND and NOR
  • Flip-flops — D, T, JK

Counting

  • Shift register
  • Johnson counter
  • Binary counter
  • Linear-feedback shift register