DIGITAL ELECTRONICS MCQS SET 15

DIGITAL ELECTRONICS MCQS SET 15

1․ The difference between the diagram of a NOR and OR gate is
a. OR has got a bubble at its output terminal
b. NOR has got a bubble at its output terminal
c. OR is more squared than NOR
d. OR is more oval than NOR
Explain:
The inverse of gate is represented by bubbled case or with a NOT gate. OR gate with a bubble is called NOR gate.
 

2․ The way of representing numbers in the form of 0s and 1s is called as
a. Zeros Notation        b. Ones Notation       c. Computer Notation
d. Binary Notation
Explain:
Binary Notation or in binary number system is the way of representing numbers in the form of 1's and 0's only.
 

3․ Transfer of data from one register to another register is known as ________ register operation.
a. Inter          b. Intra        c. Inside           d. In between
Explain:
Inter register operation is the transfer of information/data from one register to other register in the microprocessor.
 

4․ EBCDIC is abbreviated as
a. Extended Bit Coded Decimal Interchange Code
b. Extended Binary Coded Dectation Interchange Code
c. Extended Binary Color Decimal Interchange Code
d. Extended Binary Coded Decimal Interchange Code
Explain:
Extended Binary Coded Decimal Interchange Code is an eight bit code encoding mainly used on IBM devices.
 

5․ Extended Binary Coded Decimal Interchange Code is an ________ bit code.
a. 7         b. 8         c. 16         d. 32
Explain:
EBCDIC (Extended Binary Coded Decimal Interchange Code) is an 8 bit encoding used mainly on IBM devices in 1950's and 1960's.
 

6․ All the integers and decimal numbers are represented by
a. whole numbers        b. real numbers        c. even numbers
d. odd numbers
Explain:
Real Numbers is a set of integers including decimal numbers, represented by the set R.
 

7․ A sequence of binary digits is known as
a. bit string        b. byte string     c. input string       d. word string
Explain:
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.
 

8․ Latches are ________ circuits.
a. edge triggered       b. level triggered         c. pulse triggered
d. count triggered
Explain:
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.
 

9․ When will be the output of an AND gate is LOW ?
a. When any input is LOW        b. When any input is HIGH
c. When all inputs are HIGH     d. When all input is LOW
Explain:
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 ?
a. To convert coded information into non coded form
b. To convert non coded information into coded form
c. It is used to separate address bus and data bus
d. None of the above
Explain:
Decoder is used to convert the coded form like BCD into uncoded form.