Importance of computer
Computer is one of the most wonderful inventions of modem science. It is a man made machine and works according to the command given to it. It was Pascal who invented the digital theory of calculation. The credit of inventing modern calculator goes to M. Howar Akin. A lot of improvement was made on it by different scientists after that. Computer technology is used in almost every sector of everyday life, including shops, ticketing counters, educational institutions, laboratories, business agencies and even homes. Most multinational companies have computers and Internet for marketing, communicating and doing business from different parts of the world.
The five components of a computer are (a) input unit, (b) output unit, (c) memory unit, (d) control unit and (e) arithmetic unit. A computer performs the following functions. 1. It receives data, 2. It processes data by various computations and 3. It emits data. Every computer has a particular machine language according to its functions. The machine language differs from machine to machine. In the modern world computer renders great service to the civilized world. It has lessened our work load and made life easy and comfortable in the field of education computer helps to prepare study materials. Results of various public exams are prepared accurately by computer. Computer is used in hospitals and clinics to diagnose symptoms of diseases perform serious operations, grind stone etc.
The computer is also useful in the field of commerce and agriculture. Books, records and documents are preserved and printed by computer. E-mail and Internet communications can also be done through computer. It is widely used in the field of space administration, telecommunication, air traffic etc. Computers have some demerits too. Constant work on computer causes repetitive stress injury and weakens the eye sight. Very recently computer has been introduced in Bangladesh. In fact computer is doing great job by substituting human brain and thus preventing the misuse and energy.
Today, everything interrelated to your daily life can be done in a only some simple clicks. You can order your breakfast online, you can read the newspapers online, you can work from the comfort of your home with the help of a laptop, you can watch movies and videos during Youtube etc, you can read novels and books through e-books, you can play games, you can also get in touch with people and talk to them through your microphone and email. These are just but a few things that can be done with the click of a button.