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Digital Electronics

Digital Electronics
Odd parity of a bit stream can be tested using ________ gate.

 NOR
 XOR
 OR
 AND

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Digital Electronics
Boolean algebra is also known as

 Counting algebra
 Gate algebra
 Transistor algebra
 Switching algebra

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Digital Electronics
An exclusive NOR gate is logically equivalent to

 X-OR gate followed by an inverter
 inverter followed by an X-OR gate
 NOT gate followed by a NOR gate
 complement of a NOR gate

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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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Digital Electronics
(1D)16 in BCD 8421 code is

 00011101
 00101001
 00011111
 00100100

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Digital Electronics
The data bus width of a ROM of size 2048 × 8 bits is

 12
 16
 10
 8

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