Made easy work book

Question

Design a combination circuit that accepts a 2 bit number as input and generate binary number equal to square of the input number.

Answer 1

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Input

Output

x	y	a	b	c	d
0	0	0	0	0	0
0	1	0	0	0	1
1	0	0	1	0	0
1	1	1	0	0	1

now a= xy , b= xy', c = 0, d = y

 

Comments

where is C in ckt??

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It's 0 and doesn't depend on x and y. So assign 0 initially at any input of x and y.