DIGITAL COMPUTER ELECTRONICS QUIZ

Conversion of decimal number 9910 to hexadecimal number is

6116

816

6316

None of these

5016

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Subtraction of 1001011002 from 11101010102 is

1101000012

10010111102

11110000012

None of these

11110111112

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The output of the following gate is 0 only if at least one of the inputs is 1:

NOR gate

AND gate

EX-OR gate

None of these

OR gate

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How many bits are required to encode all twenty six letters ten symbols, and ten numerals?

5

3

None of these

6

2

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A p- channel enhancement type MOSFET performs much the same function as a PNP transistor, except that

it is considerably larger

it is controlled by current rather than by voltage like a bipolar transistor.

it operates much faster

None of these

it is controlled by voltage rather than by current, so that it requires very little current at the control terminal

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The XOR gates are ideal for testing parity because even-parity words produce a _ output and odd-parity words produce a _ output

low, high

None of these

odd, even

high, low

even, odd

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A bus is a group of _____ carrying digital signals.

registers

wires

None of these

transistors

gates

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The OR gate has two or more input signals. If any input is _____ the output is high.

All of these

None of these

high

low

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What is the 2's complement of 0011 0101 1001 1100 number?

1100 1010 1100 1011

1100 1010 1111 1111

1100 1010 0110 0100

1100 1010 0110 0011

None of these

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The time required for a pulse to decrease from 90 to 10 percent of its maximum value is known as

decay time

None of these

rise time

propagation delay

binary level transition period

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