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Digital Electronics

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

 00FFF
 001FF
 00100
 000FF

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Digital Electronics
A half adder is a ________ circuit.

 None
 Both A and B
 Sequential
 Combinational

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Digital Electronics
ASCII code is a

 7-bit code
 10-bit code
 8-bit code
 5-bit code

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Digital Electronics
The output of a logic gate is 1 when all its inputs are at logic 0. The gate is either

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

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

 10100010
 11011101
 01011101
 11011110

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Digital Electronics
How many bits are required to store one BCD digit ?

 4
 1
 3
 2

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