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Digital Electronics

Digital Electronics
To get an excess-3 code from BCD code

 0011 is added
 0011 is subtracted
 0110 is added
 0110 is subtracted

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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 Mhz
 8 Mhz
 2 Khz
 1 Khz

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Digital Electronics
Which one of the following is correct sequence of the numbers represented in the series(2)3, (10)4, (11)5, (14)6, (22)7,…………….

 2, 3, 4, 5, 6, ….
 2, 4, 6, 10, 16……..
 2, 4, 6, 8, 10, …..
 2, 4, 6, 10, 12, …

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Digital Electronics
Digital computers are more widely used as compared to analog computers, because they are

Easier to maintain
Less expensive
Useful over wider ranges of problem types
Always more accurate and faster

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

  1 mV.
 1.1 V.
 1 V.
 0.01 V.

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Digital Electronics
Latches are ________ circuits.

 pulse triggered
 level triggered
 edge triggered
 count triggered

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