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Digital Electronics

Digital Electronics
1s Complement of 11001010 is

 11001011
 11001001
 00110111
 00110101

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Digital Electronics
The minimum decimal equivalent of the number 11C is

 269
 268
 194
 183

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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
 2 Mhz
 1 Khz
 8 Mhz

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Digital Electronics
In which of the following codes do the successive characters differ in only 1-bit position?

 binary code
 8421 code
 cyclic code
 2421 code

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Digital Electronics
To add two m-bit numbers, the required number of half adder is

 2m
 2m+1
 2m-1
 2m-1

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Digital Electronics
Truth table is used to express

 Boolean matrix
 Boolean map
 Boolean expression
 Boolean addition

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MORE MCQ ON Digital Electronics

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