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Digital Electronics

Digital Electronics
The main criterion in the design of a digital circuit is reduction of

 volume
 weight
 size
 cost

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Digital Electronics
The decimal equivalent of hexadecimal number “BEED” is

 48,777
 48,877
 47,877
 none

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Digital Electronics
A combinational circuit can be designed using only

 NOR gates
 AND gates
 OR gates
 OR and X-NOR gates

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Digital Electronics
The decimal number 0.246 in binary is

 0.001101
 0.010111
 0.001111
 0.011011

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Digital Electronics
In Boolean algebra, OR is represented by

 +
 -
 /
 ×

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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
 2 Mhz
 1 Khz

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