Memory in sequential circuits

• Example: Door combination lock

  • Punch in 3 values in sequence and the door opens
  • If there is an error the lock doesn't open
  • Memory: Stored combination, present digit, errors or successes in past inputs

reset

open/closed

new

C1

C2

C3

comparator

value

equal

multiplexer

equal

controller

mux control

clock

Previous slide

Next slide

Back to first slide

View graphic version