ISRO | ISRO CS 2020 | Question 61

If ABCD is a 4-bit binary number, then what is code generated by the following circuit ?

(A) BCD code
(B) Gray code
(C) 8421 code
(D) Excess-3 code


Answer: (B)

Explanation: It is Binary code to Gray Code converter.

W = A, 
Y = B ⊕ C
X = A ⊕ B, 
Z = C ⊕ D 

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