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Digital Electronics

151.

Both OR and AND gates can have only two inputs.

Answer: B

Any number of inputs are possible.

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152.

Which of the following finds application in pocket calculators?

Answer: B

Because of low power consumption CMOS is used in pocket calculators.

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153.

Available multiplexer IC package can have a maximum of 8 inputs.

Answer: B

16 : 1 1C multiplexer is also available.

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154.

What will be output for decimal input 82?

Answer: A

Output for decimal input 82/(10000010) = 0.01 x 82 = 0.82 V.

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155.

For the binary number 11101000, the equivalent hexadecimal number is

Answer: D

11 01000 = 128 + 64 + 32 + 8 = 232 in decimal = E 8 in hexadecimal.

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156.

Out of latch and flip flop, which has clock input?

Answer: B

This the main difference between latch and flip-flop. Only flip-flop has clock input.

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157.

If the inputs to a 3 bit binary adder are 1112 and 1112, the output will be 110.

Answer: B

111 + 111 = 1110.

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158.

The number of bits in EBCDIC is

Answer: C

EBCDIC is an 8 bit code.

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159.

Decimal 8 in excess-3 code =

Answer: C

Decimal 8 in excess 3 code = decimal 11 = 1011 in binary.

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160.

Wired AND connection can be used in TTL with totem pole output.

Answer: B

F, No it cannot be used.

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