Q1. A computer system is made up of a hardware and software. What is meant by
a) hardware;
A computer and the associated physical equipment directly involved in the performance of data-processing or communications functions. Examples are
b) software;
Instructions for the computer. A series of instructions that performs a particular task is called a "program." The two major categories of software are "system software" and "application software." System software is made up of control programs such as the operating system and database management system (DBMS). Application software is any program that processes data for the user (inventory, payroll, spreadsheet, word processor, etc.)
Q2. Give an example of
a) an input device
A computer keyboard is a peripheral partially modeled after the typewriter keyboard. Keyboards are designed for the input of text and characters and also to control the operation of a computer.
b) an output device
A speaker is a device that converts analog audio signals into the equivalent air vibrations in order to make audible sound. A pair of speakers plugs into the computer's sound card, and their cases are shielded so that they can be placed near CRTs without causing magnetic interference.
c) a storage device
A pen drive is a flash memory card that plugs into the computer's USB port. It emulates a small disk drive and allows data to be easily transferred from one machine to another.
Q3. What is the function of the following components?
a) processor;
A program that interprets computer program instructions and processes data.
b) main memory
It determines the size and number of programs that can be run at the same time, as well as the amount of data that can be processed instantly.
c) secondary storage.
It is used to store data that is not in active use. Secondary storage is usually slower than primary storage or internal memory, but also almost always has higher storage capacity and is non-volatile which makes it perfect for the preservation of stored information in an event of power loss.
Q4. The table below contains names of several computer system components. For each component, indicate whether it is hardware or software by ticking in the correct column of the table:
a) hardware;
A computer and the associated physical equipment directly involved in the performance of data-processing or communications functions. Examples are
b) software;
Instructions for the computer. A series of instructions that performs a particular task is called a "program." The two major categories of software are "system software" and "application software." System software is made up of control programs such as the operating system and database management system (DBMS). Application software is any program that processes data for the user (inventory, payroll, spreadsheet, word processor, etc.)
Q2. Give an example of
a) an input device
A computer keyboard is a peripheral partially modeled after the typewriter keyboard. Keyboards are designed for the input of text and characters and also to control the operation of a computer.
b) an output device
A speaker is a device that converts analog audio signals into the equivalent air vibrations in order to make audible sound. A pair of speakers plugs into the computer's sound card, and their cases are shielded so that they can be placed near CRTs without causing magnetic interference.
c) a storage device
A pen drive is a flash memory card that plugs into the computer's USB port. It emulates a small disk drive and allows data to be easily transferred from one machine to another.
Q3. What is the function of the following components?
a) processor;
A program that interprets computer program instructions and processes data.
b) main memory
It determines the size and number of programs that can be run at the same time, as well as the amount of data that can be processed instantly.
c) secondary storage.
It is used to store data that is not in active use. Secondary storage is usually slower than primary storage or internal memory, but also almost always has higher storage capacity and is non-volatile which makes it perfect for the preservation of stored information in an event of power loss.
Q4. The table below contains names of several computer system components. For each component, indicate whether it is hardware or software by ticking in the correct column of the table:
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