MCQ IN COMPUTER SCIENCE & ENGINEERING

COMPUTER SCIENCE AND ENGINEERING

COMPUTER ORGANIZATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A priority encoder is a sequential circuit
A
False
B
True
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -The Priority Encoder is another type of combinational circuit similar to a binary encoder, except that it generates an output code based on the highest prioritised input.

Detailed explanation-2: -A priority encoder is a circuit or algorithm that compresses multiple binary inputs into a smaller number of outputs. The output of a priority encoder is the binary representation of the index of the most significant activated line, starting from zero.

Detailed explanation-3: -Flip-flop, counter, and shift registers are sequential circuits whereas multiplexer, decoder, and encoder act like combinational circuits.

Detailed explanation-4: -An Encoder is a combinational circuit that performs the reverse operation of Decoder. It has maximum of 2n input lines and ā€˜nā€™ output lines. It will produce a binary code equivalent to the input, which is active High.

Detailed explanation-5: -An encoder essentially performs the reverse of a decoder function in a combinational logic circuit. The process of converting from symbols or numbers to coded format is called encoding. A priority encoder has a priority function which allows it to produce an output corresponding to the highest-order input.

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