Friday , December 6 2019
Home / Computer Fundamental MCQs

Computer Fundamental MCQs

What does the COMPUTER stand for?

What does the COMPUTER stand for?

A) Commonly Operated Machines Used in Technical and Educational Research
B) Commonly Occupied Machines Used in Technical and Educational Research
C) Commonly Operated Machines Used in Technical and Environmental Research
D) Commonly Oriented Machines Used in Technical and Educational Research

Explanation:

Explanation:

The word COMPUTER is an abbreviation for the terms “Commonly Operated Machines Used in Technical and Educational Research”. The word COMPUTER also relates to the word COMPUTE which means to calculate. So, initially, it was thought that a computer is a device that is used to perform calculations.

The input machine which originated in the United States

The input machine which originated in the United States around the 1880s is a ___________?

A) Mouse
B) Joystick
C) Keyboard
D) Bar Code Reader

Explanation:

Explanation:

A keyboard is an input device that originated in the 1880s and is used to give instructions to the computer in the form of letters and numbers. The mouse is used for the selection of various objects on the screen, a joystick is mainly used for gaming purpose and bar code readers are used for reading the bar-codes.

The smallest unit of data in computer is ________________?

The smallest unit of data in computer is ________________?
A) Byte
B) Nibble
C) Bit
D) KB

Explanation:

Explanation:

A bit is defined as the smallest unit of data in a computer system. It is used as a short form of Binary Digit. A bit can have only two values 0 or 1. A nibble comprises of 4 bits, a byte is a collection of 8 bits whereas KB (Kilobyte) is equal to 1024 bytes.

Which of the following describes the correct format of an input instruction?

Which of the following describes the correct format of an input instruction?

A) IN 82
B) INPUT 82
C) INP 82
D) 82 INP

Explanation:

Explanation:

The input/output instructions are used to transfer information between external peripherals and the CPU. The correct format of an input instruction is: IN 8-bit port address. Here, IN 82 is the correct option, where 82 is the designated port address. All the other options are invalid.

The only language which the computer understands is ______________?

The only language which the computer understands is ______________?

A) Assembly Language
B) Binary Language
C) BASIC
D) C Language

Explanation:

Explanation:

The Computer understands only binary language which is written in the form of 0s & 1s. A computer can understand assembly language but an assembler is required which converts the assembly language to binary language. Similarly, for understanding high-level languages, compilers/interpreters are required.

Which unit is responsible for converting the data

Which unit is responsible for converting the data received from the user into a computer understandable format?

a) Memory Unit
b) Arithmetic & Logic Unit
c) Input Unit
d) Output Unit

Explanation:

Explanation:

The Input Unit converts the data, which the user enters into a language that the computer understands, i.e. it converts the data into binary format. The Output Unit is responsible for giving the results in a user-understandable format. The Storage Unit is responsible for storing the data after immediate results of processing whereas; the ALU is responsible for various arithmetic and bitwise operations.