Online Digital Electronics Test - Digital Electronics Test - Random



Loading...  Loading Test...

Instruction:

  • This is a FREE online test. DO NOT pay money to anyone to attend this test.
  • Total number of questions : 20.
  • Time alloted : 30 minutes.
  • Each question carry 1 mark, no negative marks.
  • DO NOT refresh the page.
  • All the best :-).


1.

A typical AHDL comparator follows an algorithm described as ________.

A.
FUNCTION constructs
B.
CASE constructs
C.
IF/ELSE constructs
D.
PROCESS constructs

Your Answer: Option (Not Answered)

Correct Answer: Option C

Learn more problems on : MSI Logic Circuits

Discuss about this problem : Discuss in Forum


2.

A basic multiplexer principle can be demonstrated through the use of a:

A.
single-pole relay
B.
DPDT switch
C.
rotary switch
D.
linear stepper

Your Answer: Option (Not Answered)

Correct Answer: Option C

Learn more problems on : Code Converters and Multiplexers

Discuss about this problem : Discuss in Forum


3.

The memory operation that stores data into a memory location after entering a new address is called ________.

A.
a read cycle
B.
a write cycle
C.
a refresh cycle
D.
chip select

Your Answer: Option (Not Answered)

Correct Answer: Option B

Learn more problems on : Memory and Storage

Discuss about this problem : Discuss in Forum


4.

The NAND or NOR gates are referred to as "universal" gates because either:

A.
can be found in almost all digital circuits
B.
can be used to build all the other types of gates
C.
are used in all countries of the world
D.
were the first gates to be integrated

Your Answer: Option (Not Answered)

Correct Answer: Option B

Learn more problems on : Boolean Algebra and Logic Simplification

Discuss about this problem : Discuss in Forum


5.

How is the speed–power product of a logic family determined?

A.
The propagation delay in s is multiplied by the power dissipation in mW.
B.
The propagation delay in ms is multiplied by the power dissipation in W.
C.
The propagation delay in ns is multiplied by the power dissipation in mW.
D.
The propagation delay in ns is multiplied by the power dissipation in W.

Your Answer: Option (Not Answered)

Correct Answer: Option C

Learn more problems on : Logic Families and Their Characteristics

Discuss about this problem : Discuss in Forum


6.

is in the form of a sum-of-products expression.

A.
True
B.
False

Your Answer: Option (Not Answered)

Correct Answer: Option A

Learn more problems on : Combinational Logic Circuits

Discuss about this problem : Discuss in Forum


7.

A 2-input NOR gate is equivalent to a ________.

A.
negative-OR gate
B.
negative-AND gate
C.
negative-NAND gate
D.
none of the above

Your Answer: Option (Not Answered)

Correct Answer: Option B

Learn more problems on : Logic Gates

Discuss about this problem : Discuss in Forum


8.

The output of an OR gate with three inputs, A, B, and C, is LOW when ________.

A.
A = 0, B = 0, C = 0
B.
A = 0, B = 0, C = 1
C.
A = 0, B = 1, C = 1
D.
all of the above

Your Answer: Option (Not Answered)

Correct Answer: Option A

Learn more problems on : Logic Gates

Discuss about this problem : Discuss in Forum


9.

The output of an analog-to-digital converter is a voltage level.

A.
True
B.
False

Your Answer: Option (Not Answered)

Correct Answer: Option B

Learn more problems on : Interfacing to the Analog World

Discuss about this problem : Discuss in Forum


10.

The special function registers are maintained in the next 128 locations after the general-purpose data storage and stack.

A.
True
B.
False

Your Answer: Option (Not Answered)

Correct Answer: Option A

Learn more problems on : The 8051 Microcontroller

Discuss about this problem : Discuss in Forum


11.

One hex digit is sometimes referred to as a(n):

A.
byte
B.
nibble
C.
grouping
D.
instruction

Your Answer: Option (Not Answered)

Correct Answer: Option B

Learn more problems on : Number Systems and Codes

Discuss about this problem : Discuss in Forum


12.

The carry propagation can be expressed as ________.

A.
Cp = AB
B.
Cp = A + B
C.
D.

Your Answer: Option (Not Answered)

Correct Answer: Option B

Learn more problems on : Combinational Logic Circuits

Discuss about this problem : Discuss in Forum


13.

The number of binary bits at the input of a DAC or the output of an ADC is known as ________.

A.
accuracy
B.
linearity
C.
resolution
D.
monotonicity

Your Answer: Option (Not Answered)

Correct Answer: Option C

Learn more problems on : Interfacing to the Analog World

Discuss about this problem : Discuss in Forum


14.

A seven-segment, common-anode LED display is designed for:

A.
all cathodes to be wired together
B.
one common LED
C.
a HIGH to turn off each segment
D.
disorientation of segment modules

Your Answer: Option (Not Answered)

Correct Answer: Option C

Learn more problems on : Counters

Discuss about this problem : Discuss in Forum


15.

The circuit shown is a(n) ________.

A.
multiplexer
B.
adder
C.
comparator
D.
converter

Your Answer: Option (Not Answered)

Correct Answer: Option B

Learn more problems on : Digital Arithmetic Operations and Circuits

Discuss about this problem : Discuss in Forum


16.

Select the statement that best describes the fusible-link PROM.

A.
user-programmable, one-time programmable
B.
manufacturer-programmable, one-time programmable
C.
user-programmable, reprogrammable
D.
manufacturer-programmable, reprogrammable

Your Answer: Option (Not Answered)

Correct Answer: Option A

Learn more problems on : Memory and Storage

Discuss about this problem : Discuss in Forum


17.

Memory devices that use electronic latching circuits are called ________.

A.
RAM
B.
flip-flops
C.
magnetic tape
D.
DRAM

Your Answer: Option (Not Answered)

Correct Answer: Option B

Learn more problems on : Digital Concepts

Discuss about this problem : Discuss in Forum


18.

How long will it take to serially transmit the hexadecimal number C316 if the clock frequency is 1.5 MHz?

A.
4.69 ms
B.
4.69 s
C.
5.33 ms
D.
5.33 s

Your Answer: Option (Not Answered)

Correct Answer: Option D

Learn more problems on : Signals and Switches

Discuss about this problem : Discuss in Forum


19.

The hexadecimal numbering system uses base 15.

A.
True
B.
False

Your Answer: Option (Not Answered)

Correct Answer: Option B

Learn more problems on : Number Systems and Codes

Discuss about this problem : Discuss in Forum


20.

Four bits equal one byte.

A.
True
B.
False

Your Answer: Option (Not Answered)

Correct Answer: Option B

Learn more problems on : Digital Concepts

Discuss about this problem : Discuss in Forum


Submit your test now to view the Results and Statistics with answer explanation.