DIGITAL COMPUTER ELECTRONICS QUIZ

The hexadecimal number system is widely used in analyzing and programming ______

None of these

registers

microprocessors

vacuum tube

chips

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A NAND gate is equivalent to an AND gate followed by an inverter. All inputs must be _____ to get a low output

0's

None of these

low

some low and some high

high

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A multiplexer is also known as

coder

data selector

None of these

multivibrator

decoder

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Binary means _____

Four

Two

None of these

Ten

Three

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De Morgan's second therm says that NAND gate is equivalent to a bubbled _____ gate.

None of these

OR

XOR

XAND

AND

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The logic 1 in positive logic system is represented by:

higher voltage level

None of these

zero voltage

lower voltage level

negative voltage

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What is the 2's-complement representation of -24 in a 16-bit microcomputer?

1111 1111 1110 1000

0001 0001 1111 0011

None of these

1111 1111 1110 0111

0000 0000 0001 1000

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A shift register can be used for:

None of these

All of these

serial to parallel conversion

parallel to serial conversion

digital delay line

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An OR gate can be imagined as

None of these

switches connected in parallel

MOS transistors connected in series

switches connected in series

All of these

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How many bytes are there in 1011 1001 0110 1110 numbers?

4

1

2

None of these

8

TRUE ANSWER : ?
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