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Digital Electronics

Digital Electronics
A half adder is a ________ circuit.

 Sequential
 Combinational
 None
 Both A and B

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Digital Electronics
Which one of the following is not a vectored interrupt?

 TRAP.
 RST 6.5.
 INTR.
 RST 7.5.

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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 2’s complement is used to represent the numbers, then the range will be

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

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Digital Electronics
The switch which clears a flip-flop is know as

 None
 Both A and B
 Reset
 Clear

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Digital Electronics
Which of the following gates is known as anticoincidence detector?

 AND gate
 OR gate
 X-NOR gate
 X-OR gate

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Digital Electronics
Which of the logical operations is represented by the + sign in Boolean algebra ?

 NOT
 AND
 OR
 NAND

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