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Digital Electronics

Digital Electronics
For a code to be self-complementing, the sum of all its weights must be

 6
 9
 12
 10

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Digital Electronics
While using a frequency counter for measuring frequency, two modes of measurement are possible. 1. Period time 2. Frequency mode There is a ‘cross-over frequency’ below which the period mode is preferred. Assuming the crystal oscillator frequency to be 4Mhz the crossover frequency is given by

 2 Khz
 8 Mhz
 1 Khz
 2 Mhz

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Digital Electronics
The number of parity bits in a 12-bit Hamming code is

 8
 6
 5
 4

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Digital Electronics
The boolean algebra is mostly based on

 Standard theorem
 Boolean theorem
 De Morpans theorem
 De Morgans theorem

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Digital Electronics
The binary number 110011.11 is equivalent to decimal number

 50.65
 51.75
 51.65
 50.75

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

 11
 13
 12
 10

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