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Digital Electronics

Digital Electronics
Latches are ________ circuits.

 level triggered
 pulse triggered
 edge triggered
 count triggered

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Digital Electronics
Which of the following gates is known as anticoincidence detector?

 AND gate
 OR gate
 X-NOR gate
 X-OR gate

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Digital Electronics
If 4 input MUXes drive a 4 input multiplexer, it results a

 16 input MUX
 4 input MUX
 6 input MUX
 8 input MUX

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Digital Electronics
Simplified form of the function f = (x+y+xy)(x+z)

 x+xyz
 x+y
 y+xz
 x+yz

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Digital Electronics
The hex address of the 256th memory location is

 00100
 000FF
 001FF
 00FFF

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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
 2 Khz
 8 Mhz
 1 Khz

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