For a Mod 64 parallel counter we need

6 flip flops

6 flip flops and 2 AND gates

6 flip flops and 4 AND gates

None of the above

Correct Answer : Option (C) : 6 flip flops and 4 AND gates

Explanation : 2⁶ = 64

So we need 6 flip-flops and (6 - 2) = 4 AND gates.

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Two 16 : 1 and one 2 : 1 multiplexers can be connected to form a

8 : 1 multiplexer

16 : 1 multiplexer

32 : 1 multiplexer

64 : 1 multiplexer

Correct Answer : 32 : 1 multiplexer

If interrupt service request have been received from all of the following interrupts, then which one will be serviced last?

RST 5.5

RST 6.5

RST 7.5

None of the above

Correct Answer : RST 5.5

Which liquid crystal is used for LCD display?

Mercury

Aqua regia

Liquid boron

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Correct Answer : Pneumatic fluid