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Digital Electronics

Digital Electronics
Logic circuits are

 digital circuits
 none of these
 analog circuits
 hybrid circuits

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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

 8 Mhz
 1 Khz
 2 Khz
 2 Mhz

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Digital Electronics
Which one of the following even parity codes are in errors. (I)100110010 (II)011101010 (III)10111111010001010

 Both (I)&(III)
 Only (III)
 Both (II)&(III)
 Only (II)

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Digital Electronics
How many numbers are used in the decimal number system?

 1 to 10
 0 to 9
 0 to 10
None of these

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

 10
 6
 9
 12

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Digital Electronics
The field, which is never present in an assembly language statement, is

 Continue
 Opcode
 Comment
 Operand

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