Download Aptitude Crack
img not found img not found

Exam Questions Papers - Engineering

Q1:

The circuit shown in the figure converts

A BCD to Binary code 

B Binary to excess - 3 code

C Excess - 3 to Gray

D Gray to Binary

ANS:D - Gray to Binary

Let input is 1 1 0 1 y1 = x1 y2 = x2 ⊕ x1 ⇒ 1 ⊕ 1 = 0 y3 = x3 ⊕ x2 = 0 ⊕ 0 = 0 y4 = x4 ⊕ x3 = 1 ⊕ 0 = 1 if input is gray then y1 y2 y3 y4 will be Binary.