Digital Electronics:: Digital Concepts MCQs

Question 1

Any number with an exponent of zero is equal to:

Accepted Answer

one

Answer

zero

Answer

that number

Answer

ten

Question 2

In the decimal numbering system, what is the MSD?

Accepted Answer

The digit with the most weight

Answer

The middle digit of a stream of numbers

Answer

The digit to the right of the decimal point

Answer

The last digit on the right

Question 3

Which of the following statements does NOT describe an advantage of digital technology?

Accepted Answer

The values may vary over a continuous range.

Answer

The circuits are less affected by noise.

Answer

The operation can be programmed.

Answer

Information storage is easy.

Question 4

The generic array logic (GAL) device is ________.

Accepted Answer

reprogrammable

Answer

one-time programmable

Answer

a CMOS device

Answer

reprogrammable and a CMOS device

Question 5

The range of voltages between VL(max) and VH(min) are ________.

Accepted Answer

unacceptable

Answer

unknown

Answer

unnecessary

Answer

between 2 V and 5 V

Question 6

What is a digital-to-analog converter?

Accepted Answer

It takes the digital information from an audio CD and converts it to a usable form.

Answer

It allows the use of cheaper analog techniques, which are always simpler.

Answer

It stores digital data on a hard drive.

Answer

It converts direct current to alternating current.

Question 7

What are the symbols used to represent digits in the binary number system?

Accepted Answer

0,1

Answer

0,1,2

Answer

0 through 8

Answer

1,2

Question 8

A full subtracter circuit requires ________.

Accepted Answer

three inputs and two outputs

Answer

two inputs and two outputs

Answer

two inputs and three outputs

Answer

three inputs and one output

Question 9

The output of an AND gate is LOW ________.

Accepted Answer

when any input is LOW

Answer

all the time

Answer

when any input is HIGH

Answer

when all inputs are HIGH