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Digital Electronics

Digital Electronics
A multiplexer is a combinational logic circuit used to perform the operation

 NOR-OR
 XOR-NAND
 AND-AND
 AND-OR

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Digital Electronics
Most of the digital computers do not have floating point hardware because

Floating point hardware is costly
It is slower than software
It is not possible to perform floating point addition by hardware
Of no specific reason

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Digital Electronics
The logic expression A + B can be implemented by giving inputs A and B to a two-input

 X-NOR gate
 NAND gate
 X-OR gate
 NOR gate

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Digital Electronics
When will be the output of an OR gate is LOW ?

 When all inputs are HIGH
 When any input is LOW
 When all input is LOW
 When any input is HIGH

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Digital Electronics
OR operation is equivalant to

 Both B and C
 Division
 Intersection
 Union

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

 TTL.
 All have same speed.
 DTL.
 RTL.

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