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Digital Electronics

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

 y+xz
 x+yz
 x+y
 x+xyz

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Digital Electronics
1 Kilo bits are equal to

 1000 bits
 1012 bits
 1024 bits
 1008 bits

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Digital Electronics
In Boolean algebra AND is represented by

 ×
 +
 /
 -

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Digital Electronics
A gate is inhibited when its inhibit input is at logic 1. The gate is

 NAND
 none of these
 AND
 OR

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Digital Electronics
The voltage levels for negative logic system

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

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Digital Electronics
Which of the following codes is known as the 8421 code?

 Gray code
 ASCII code
 XS-3 code
 BCD code

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