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Digital Electronics

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

 XS-3 code
 BCD code
 ASCII code
 Gray code

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Digital Electronics
In Boolean algebra, the bar sign (-) indicates ___________.

None of these
OR operation
AND operation
NOT operation

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Digital Electronics
The most suitable gate for comparing two bits is

 NAND
 X-OR
 OR
 AND

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Digital Electronics
Why generic array logic (GAL) device was invented ?

None of these
 Mask programmable
 One-time programmable
 Reprogrammable

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Digital Electronics
Which of the following is 1’s complement representation of -34?

 11011101
 11011110
 01011101
 10100010

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Digital Electronics
The difference between the diagram of a NOR and OR gate is

 OR is more squared than NOR
 NOR has got a bubble at its output terminal
 OR has got a bubble at its output terminal
 OR is more oval than NOR

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