BISTABLES

Question 1

How will the HIGH Q output affect state of flip flop/latch?

Answer 1

When the Q output (Normal or True output) is HIGH, the Flip-flop is said to be in the SET or PRESET state.

Question 2

How will the LOW Q output affect state of flip flop/latch?

Answer 2

When the Q output is LOW, the Flip-flop can be described as being in the CLEAR or RESET state.

Question 3

What will happen if you apply S = 1 and C = 0 to a NAND latch?

Answer 3

Q will go LOW and NOT Q will go HIGH. Latch is in clear state.

Question 4

What will happen if you apply S = 1 and C = 0 to a NOR latch?

Answer 4

Q will go HIGH and NOT Q will go LOW. Latch is in SET state.

Question 5

What will happen if you apply S = 1 and C = 1 to a NAND latch?

Answer 5

Both SET and CLEAR would be in the resting state. No change to output Q or state of Latch

Question 6

What will happen if you apply S = 0 and C = 0 to a NOR latch?

Answer 6

Both SET and CLEAR would be in the resting state. No change to output Q or state of Latch