Introduction
Computer is an electronic, digital device which is operated under given instructions stored in its own memory. Computers are very useful to us. They are used almost everywhere even at work, school and home by people to complete certain tasks or work. There are many types of computers such as desktop computers, pocket PC, and even smartphones. Computer consists of two components. They are hardware and software. The hardware are the parts of computer itself including the Central Processing Unit (CPU) and related microchips and micro-circuitry, keyboards, monitors, case and drives (hard, CD, DVD, floppy, optical, tape, etc...). Other extra parts called peripheral components or devices include mouse, printers, modems, scanners, digital cameras and cards (sound, colour, video) etc... Together they are often referred to as a personal computer. The software is the information that the computer uses to get the job done. Software needs to be accessed before it can be used. There are many terms used for process of accessing software including running, executing, starting up, opening, and others.Computer programs allow users to complete tasks. A program can also be referred to as an application and the two words are used interchangeably.
A) How computers change the way people work in factories, office, homes and a variety of industries
Back in the old times, a few people are needed to work on a job but now it only takes 1 person and the help of a computer to get the job done which also saves time and manpower. This is because computers used in factories saves labour by doing jobs which need to be done by a few or more people. Next, the way people used to work in offices and homes back before the computer was invented is by typing documents using a typewriter or writing letters. Nowadays, computers are like a replacement for typewriters. This is because they can be used to type documents and letters. This not only saves