Topic 8: Sequential Systems

Question 1

What is a bi-stable?

Answer 1

• Flip-flop
• Two stable states

Question 2

What are the uses of D-type Flip-Flops?

Answer 2

• Data transfer
• Latches
• Counters

Question 3

What does a D-Type Flip-Flop look like?

Answer 3

Bottom - R, reset
Bottom Left - Triangle, Clock Input
Top Left - D, data input
Top - S, set
Top Right - Q, output terminal
Top Left - q̅, inverse output terminal

Question 4

As using a large number of flip flops can be a mess of wires for a fairly common task, what can you use instead?

Answer 4

ICS that have 4 or 8 bit counters