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Digital Electronics

Digital Electronics
If clock time period is 1ms, what is its frequency

None of these
 1 MHz
 1 mHz
 1 kHz

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Digital Electronics
A computer has a word length of 8 bits (including sign). It is required to determine the range of integers that can be stored in the computer. If 1’s complement is used to represent the numbers, then the range will be

 -256 to 256
 -128 to 127
 -127 to 127
 -256 to 255

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Digital Electronics
Which of the following logic circuits is the fastest ?

 RTL.
 TTL.
 DTL.
 All have same speed.

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Digital Electronics
The output of a logic gate is 0 when all its inputs are at logic 0. The gate is either

 a NAND or an X-OR
 an OR or an X-OR
 an AND or a NOR
 an OR or an X-NOR

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

 Run-time
 Truth
 Propagation
 Operating

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Digital Electronics
The voltage levels for negative logic system

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

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