List of top Analog and Digital Electronics Questions on Combinational Logic Circuits

The figure below shows the Karnaugh map (K-map) for a truth table with 4 variables \(A\), \(B\), \(C\) and \(D\). Which one of the following expressions represents the minimum sum of products? Note: The empty cells in the K-map are 0's.

AB / CD	00	01	11	10
00
01		1	1	1
11	1		1	1
10				1

In the following digital circuit, the delay of both the NAND gates is 4 nanoseconds (ns) and the delay of the NOT gate is 1 ns. If a 10 MHz clock signal with 50% duty cycle is given as the input, the duty cycle of the output is %.
(Answer in integer)