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Digital Electronics

Digital Electronics
Which number system has a base of 16

 Octal
 Decimal
 Hexadecimal
 None

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Digital Electronics
Which of these sets of logic gates are designated as universal gates?

 OR, NOT, AND.
 NOR, NAND, XNOR.
 XOR, NOR, NAND.
 NOR, NAND.

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Digital Electronics
At which the digital data can be applied to a a gate is known as ________ frequency.

 Propagation
 Truth
 Operating
 Run-time

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Digital Electronics
(44)8 in BCD 8421 code is

 00110110
 01100011
 00100100
 01000100

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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

 1 Khz
 2 Mhz
 2 Khz
 8 Mhz

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Digital Electronics
A demultiplexer is a

 1-to-N device
 N-to-N device
 1-to-1 device
 N-to-1 device

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