Gate EE-2014-2 Question Paper With Solutions

Q. 31 Which of the following is an invalid state in an 8-4-2-1 Binary Coded Decimal
counter

(A) 1 0 0 0

(B) 1 0 0 1

(C) 0 0 1 1

(D) 1 1 0 0

Answer:(D)

Explanation: