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Digital Electronics

Digital Electronics
The complement of a function A is

 A
 Ā
 1
 0

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Digital Electronics
When will be the output of a NOT gate is LOW ?

None of these
 the input is HIGH and LOW.
 the input is LOW.
 the input is HIGH.

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Digital Electronics
The simplified block diagram of a 10-bit A/D converter of dual slope integrator type is shown in figure. The 10-bit counter at the output is clocked by a 1 Mhz clock. Assuming negligible timing overhead for the control logic, the maximum frequency of the analog signal that can be converted using this A/D converted is approximately .

 2 KHz.
 250 Hz.
  1 KHz.
 500 Hz.

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Digital Electronics
A D-flip-flop is said to be transparent when

 the output is LOW
 the output is HIGH
 the output follow input
 the output follows clock

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Digital Electronics
Switching circuits are

 digital circuits
 analog circuits
 hybrid circuits
 none of these

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Digital Electronics
The momentary change in the output/state of the flip-flops is known as

 trigger
 unstable state
 tri-state
 inverter

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