Question

How to calculate propagation delay in logic gates of input is changes?

Answer 1

Answer:

Two propagation delays are quoted for a logic gate depending upon whether the output is .... Figure 2.68 shows a four-input logic circuit

Answer 2

Heya Mate..........

output The propagation delay tp is defined as: tp = time when output is halfway between initial and final value - time when input is halfway between initial and final value. To get an approximate idea of the effects of delay, we make the transitions look instantaneous (though they are exponential).