15.2 Boolean Algebra and Logic Circuits Flashcards
(5 cards)
1
Q
What does a half adder do
A
- Carries out binary addition on 2 bits generating two outputs
2
Q
What is a full adder
A
- When we need addition of several binary bits
- That the half adder is unable to do
3
Q
Explain the role of flip-flop in a computer
A
- A flip-flop can store either a 1 or 0
- Computers use bits to store data
- Flip-flops can be used to store bits
- Memory can be created from flip-flops
4
Q
Why is the JK flip-flop an improvement to SR flip-flop
A
- SR flip-flop has an invalid combination, of Q and -Q having the same value
- JK flip-flop does not allow this
5
Q
Advantages of JK flip-flop
A
- All possibilities are valid
- Unstable state avoided
- Has clock pulse input, to ensure inputs arrive at the same time
