Test: Fundamentals of Computer - 3 - Class 9 MCQ

The CPU is referred to as the brain of a computer.
It consists of a control unit and an arithmetic and logic unit. It is responsible for performing all the processes and operations.

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 4 bits, a byte is a collection of 8 bits whereas KB (Kilobyte) is equal to 1024 bytes.

A CRT (or the Cathode Ray Tube) Monitor looks like a television ideally. The flat-panel monitors are thinner and lighter in comparison.

A processor is a part of the computer which does all the data manipulation and decision making. A processor comprises of:
A data path that contains the hardware necessary to perform all the operations. A controller tells the data path what needs to be done.
The registers act as intermediate storage for the data.

Abacus was used to do arithmetic calculations around 2500 years ago. Pascaline was the pascal’s calculator by Blaise Pascal invented for doing laborious calculations.

Hardware refers to the physical devices of a computer system. Software refers to a collection of programs. A program is a sequence of instructions.

Tertiary storage is the correct option. It is used in the realms of enterprise storage and scientific computing on large computer systems and business computer networks and is something a typical personal computer never sees firsthand.

The I/O i.e. the input/output devices provide a means of communication between the computer and the outer world. They are often referred to as peripheral devices sometimes.

A digitizer serves the purpose given in the question. Digitizers are generally used in the area of Computer-Aided Design by architects and engineers to design cars, buildings, etc.

The language made up of binary-coded instructions built into the hardware of a particular computer and used directly by the computer is machine language.