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Digital Concepts Online Exam Quiz

Important questions about Digital Concepts. Digital Concepts MCQ questions with answers. Digital Concepts exam questions and answers for students and interviews.

1. With an AND gate, if one input is HIGH, the output reflects the other input.

Options

A : True

B : False

C :

D :

2. The time interval on the leading edge of a pulse between 10% and 90% of the amplitude is the rise time.

Options

A : True

B : False

C :

D :

3. The real world is mainly analog.

Options

A : True

B : False

C :

D :

4. It is possible to have an overlap between high and low levels in digital logic.

Options

A : True

B : False

C :

D :

5. Digital systems have ________.

Options

A : one state

B : two states

C : three states

D : four states

6. The horizontal axis of an oscilloscope is normally calibrated in units of ________.

Options

A : voltage

B : current

C : time

D : frequency

7. The digit that changes most often when counting is called the ________.

Options

A : LSB

B : LL Bean

C : LED

D : LCD

8. The controls on an oscilloscope that will help obtain a stable display are in the ________.

Options

A : vertical section

B : horizontal section

C : trigger section

D : display section

9. The duty cycle of a square wave is ________.

Options

A : 10%

B : 25%

C : 50%

D : 100%

10. A set of instructions for a computer is called a(n) ________.

Options

A : instruction manual

B : logic unit

C : program

D : diagram

1. In ________ transmission, a single conductor is used.

Options

A : digital

B : automatic

C : serial

D : binary

2. In ________ the quantities are not represented by continuously variable indicators.

Options

A : analog representation

B : digital representation

C : signal representation

D : computer representation

3. The CPU contains all the circuitry for ________.

Options

A : storing data

B : keeping track of time

C : fetching and interpreting instructions

D : Internet operations

5. A logic circuit that can store one bit of information is a ________.

Options

A : flip-flop

B : counter

C : gate

D : code converter

6. A microcontroller would not be used in a(n) ________.

Options

A : VCR

B : automobile ignition system

C : antilock brakes

D : grandfather clock

7. Once a signal is digitized, the information it contains does not ________ as it is processed.

Options

A : complain

B : stiffen

C : compress

D : deteriorate

9. A continually variable, proportional indicator is a(n) ________ representation.

Options

A : decimal

B : digital

C : unconstitutional

D : analog

10. The invalid range for an input to TTL logic is from ________.

Options

A : 0 to 0.8 V

B : 1.2 to 1.6 V

C : 0.8 to 2.0 V

D : 2.0 to 5.0 V

1. The control and arithmetic/logic units are often considered as one unit called the ________.

Options

A : central processing unit

B : inputs and outputs

C : microcomputer

D : arithmetic/logic unit

2. The decimal system is composed of ________ symbols.

Options

A : 2

B : 8

C : 10

D : 16

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