Q-What is the difference between LATCH & FLIP-Flop?
Ans: We can easily find the answer after going through the theory given:
- Latches are level sensitive while flip-flops are edge sensitive devices
- Hence latches faces problems like glitches in the output while no such problem occurs in flip-flops.
- As we can see from different circuits given earlier, we need more gates to implement flip-flops than latches.
Q- Implement the function of D latch using MUX?
Ans: We know D-LATCH can be triggered when CLK is 1 (positive level triggered) or when CLK is 0 (negative level triggered). Hence we can implement both of these as follow:
And we can make a truth table for each of these as:
Those are actually the truth tables for D-LATCH. Hence we get the D-latch using MUX.
Q- Implement the function of T latch using MUX & a NAND gate?
Ans: We can achieve the above as follow: