MCQs on Digital Electronics


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01․ The difference between the diagram of a NOR and OR gate is
OR has got a bubble at its output terminal
NOR has got a bubble at its output terminal
OR is more squared than NOR
OR is more oval than NOR

The inverse of gate is represented by bubbled case or with a NOT gate. OR gate with a bubble is called NOR gate.

02․ The way of representing numbers in the form of 0s and 1s is called as
Zeros Notation
Ones Notation
Computer Notation
Binary Notation

Binary Notation or in binary number system is the way of representing numbers in the form of 1's and 0's only.

03․ Transfer of data from one register to another register is known as ________ register operation.
Inter
Intra
Inside
In between

Inter register operation is the transfer of information/data from one register to other register in the microprocessor.

04․ EBCDIC is abbreviated as
Extended Bit Coded Decimal Interchange Code
Extended Binary Coded Dectation Interchange Code
Extended Binary Color Decimal Interchange Code
Extended Binary Coded Decimal Interchange Code

Extended Binary Coded Decimal Interchange Code is an eight bit code encoding mainly used on IBM devices.

05․ Extended Binary Coded Decimal Interchange Code is an ________ bit code.
7
8
16
32

EBCDIC (Extended Binary Coded Decimal Interchange Code) is an 8 bit encoding used mainly on IBM devices in 1950's and 1960's.

06․ All the integers and decimal numbers are represented by
whole numbers
real numbers
even numbers
odd numbers

Real Numbers is a set of integers including decimal numbers, represented by the set R.

07․ A sequence of binary digits is known as
bit string
byte string
input string
word string

A bit string is a sequence of binary digits (bits), consists of 1s and 0s. It can be designed or set or can manipulate binary data.

08․ Latches are ________ circuits.
edge triggered
level triggered
pulse triggered
count triggered

Edge is a duration. In latches the inputs appear at the output until the clock is 1, otherwise it is disabled. Latches are level triggered flip-flop.

09․ When will be the output of an AND gate is LOW ?
When any input is LOW
When any input is HIGH
When all inputs are HIGH
When all input is LOW

AND gate means, A.B = Output. Now if any of the input is low means 0, then output is becomes 0.

10․ Why decoder is used in the digital electronics ?
To convert coded information into non coded form
To convert non coded information into coded form
It is used to separate address bus and data bus
None of the above

Decoder is used to convert the coded form like BCD into uncoded form.

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