499 B
499 B
- Output depends on input and past behavior
- Requires use of storage elements
Latches
SR Latch
SR stands for Set/Reset, and functions like so:
- When a signal comes into
S
,Q_a
is set on and stays on until a signal comes intoR
, at which pointS
Truth table:
S |
R |
Q_a |
Q_b |
---|---|---|---|
0 | 0 | 0/1 | 1/0 |
0 | 1 | 0 | 1 |
1 | 0 | 1 | 0 |
1 | 1 | 0 | 0 |
!![]() |