Separate “data path” and “control”

• Data path

  • Stores combination
  • Compares inputs with combination
  • multiplexer (mux): circuit which selects one value

• Control

  • Finite state-machine controller
  • Control for data path
  • State changes clocked

reset

open/closed

new

C1

C2

C3

comparator

value

equal

(goes to controller)

multiplexer

equal

controller

mux control

clock

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