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Digital Electronics

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

 48,777
 none
 47,877
 48,877

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Digital Electronics
Excess-3 code is known as

Cyclic redundancy code
Algebraic code
Self-complementing code
Weighted code

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Digital Electronics
Which mechanism allocates the binary value to the states in order to reduce the cost of the combinational circuits?

State Reduction
State Minimization
State Assignment
State Evaluation

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Digital Electronics
An 8 × 4 ROM contains a decoder of size

 8 × 4
 3 × 8
 8 × 8
 3 × 4

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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
 1 Khz
 2 Khz

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Digital Electronics
(11011) 2 in BCD 8421 code is

 00100111
 00011011
 01101100
 11011001

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