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Digital Electronics

Digital Electronics
Consider the operation 24+17 = 40 .What is the correct base of number so that operation is correct?

 12
 11
 10
 13

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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?

 2:3
 2:1
 1:1
 1:2

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Digital Electronics
The decimal equivalent of the highest possible address for an 8-bit address bus is

 255
 256
 8
 128

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Digital Electronics
In the toggle mode a JK flip-flop has

 J = 0, K = 0.
 J = 0, K = 1.
 J = 1, K = 0.
 J = 1, K = 1.

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Digital Electronics
A digital voltmeter has a read out range from 0 to 999 counts, the resolution is

  1 mV.
 1 V.
 1.1 V.
 0.01 V.

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Digital Electronics
The binary code of (21.125)10 is

10100.111
10100.001
10101.01
10101.001

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