Question
Download Solution PDFThe functional difference between an S-R flip flop and J-K flip flop is that
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDF- In J-K flip flop when both inputs are HIGH, the output toggles i.e. it changes from high to low and low to high periodically when both the inputs are 1.
- For an SR flip flop, however, when both the inputs are HIGH, we encounter an invalid state, which is not present for a JK flip flop.
- This is explained with the help of the following function table:
|
S |
R |
CLK |
Q |
|
0 |
0 |
↑ |
Q0 (no change) |
|
1 |
0 |
↑ |
1 |
|
0 |
1 |
↑ |
0 |
|
1 |
1 |
↑ |
Ambiguous (Invalid) |
Similarly, for a JK flip flop, the block diagram along with the function table is as shown:
|
J |
K |
CLK |
Q |
|
0 |
0 |
↑ |
Q (no change) |
|
1 |
0 |
↑ |
1 |
|
0 |
1 |
↑ |
0 |
|
1 |
1 |
↑ |
Q̅ (toggles) |
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