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Digital Electronics

Digital Electronics
A device which converts decimal number into BCD form is called

 multiplexer
 decoder
 encoder
 code converter

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Digital Electronics
The voltage levels for negative logic system

 must necessarily be positive
 must necessarily be negative
 must necessarily be 0 V and –5 V
 may be negative or positive

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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
 2 Khz
 2 Mhz
 1 Khz

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Digital Electronics
Which is typically the longest: bit,byte,nibble,word?

 word
 bit
 byte
 nibble

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Digital Electronics
The 7-bit Hamming code is used to transmit

 3 data bits
 4 data bits
 no data bits
 7 data bits

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Digital Electronics
In Boolean algebra AND is represented by

 -
 +
 ×
 /

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MORE MCQ ON Digital Electronics

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