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Digital Electronics

Digital Electronics
Among the logic families, the family which can be used at very high frequency greater than 100 MHz in a 4 bit synchronous counter is

TTLAS
CMOS
ECL
TTLLS

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Digital Electronics
The number of 1 in 8-bit representation of 127 in 2’s complement form is m and that in 1,s complement form is n. What is the value of m:n?

 1:2
 2:1
 2:3
 1:1

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Digital Electronics
The binary code of (21.125)10 is

10101.001
10100.001
10101.01
10100.111

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Digital Electronics
A group of four bits is known as

 Word
 Byte
 Nibble
 Bit

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Digital Electronics
An OR gate has 6 inputs. The number of input words in its truth table are

128
6
32
64

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Digital Electronics
A multiplexer is a

 1-to-1 device
 N-to-1 device
 1-to-N device
 N-to-N device

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