COMPUTER SCIENCE AND ENGINEERING
DIGITAL LOGIC
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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C
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C’
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1
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A
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Detailed explanation-1: -A 4×1 MUX is used to implement a 3-input Boolean function as show in figure. The Boolean function P( A, B, C) implemented is. No worries!
Detailed explanation-2: -The most common and popular 4-to-1 line multiplexer is IC 74153 which, is a dual 4-to-1 line multiplexer. It consists of two identical 4-to-1 multiplexers. It has two separate enable or strobe inputs to switch ON or OFF the individual multiplexers. But the Select lines are common to both the Multiplexers.
Detailed explanation-3: -A 4-to-1 multiplexer takes 4 inputs and directs a single selected input to output. The selection of input is controlled by selection inputs. A 4-to-1 multiplexer consists of a 2-to-4 decoder and 4X2 AND-OR. This multiplexer however takes 4 8-bit bus as inputs and outputs a single 8-bit bus.
Detailed explanation-4: -Three(3) 2 : 1 MUX are required to implement 4 : 1 MUX.