MCQ IN COMPUTER SCIENCE & ENGINEERING

COMPUTER SCIENCE AND ENGINEERING

COMPUTER ORGANIZATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A counter circuit is usually constructed of ____
A
A number of latches connected in cascade form
B
A number of NAND gates connected in cascade form
C
A number of flip-flops connected in cascade
D
A number of NOR gates connected in cascade form
Explanation: 

Detailed explanation-1: -A counter circuit is usually constructed of several flip-flops connected in a cascade. Counters are a very widely used component in digital circuits, and are manufactured as separate integrated circuits and also incorporated as parts of larger integrated circuits.

Detailed explanation-2: -Explanation: A counter circuit is usually constructed of a number of flip-flops connected in cascade. Preferably, JK Flip-flops are used to construct counters and registers. 3.

Detailed explanation-3: -The toggle (T) flip-flop are being used. But we can use the JK flip-flop also with J and K connected permanently to logic 1. External clock is applied to the clock input of flip-flop A and QA output is applied to the clock input of the next flip-flop i.e. FF-B.

Detailed explanation-4: -Detailed Solution. A decade counter needs at least 4 flip flops within its chain because it counts in a sequence of ten and returns to zero after the count crosses 9. To count up to a binary value of nine, 4 flip flops are mandatory.

Detailed explanation-5: -A counter is a device that stores (and sometimes displays) the number of times a particular event or process occurred, with respect to a clock signal.

There is 1 question to complete.