THE COMPUTER

COMPUTER 

INTRODUCTION:

Calculations and other numerical operation are very difficult to humans. Computer was invested as a computer machine at its first appearance in the late 19th century but became popular in 20th century. Nowadays, computer has become a part and parcel of every life due to its versatility in operation, computer became popular in every locations. Computers create rooms for many kinds of programs to operate and function as programmed. We are going to see how relevant these programs are to our society. Internet technology is a little older in technology. In general, it has been in existence since `60’s when the United State Department of Defense (DOD) which has global nature of activities wanted a wide area network (WAN) that would allow their computers in different ways to inter-connect and inter-operate as it maintain operations through peace keeping in foreign countries.
Therefore, computer is referred to as a machine that requires all electrical power to drive it.

WHAT IS A COMPUTER?

There are many definitions of a computer. Everyone has his/her own definition of a computer from his/her own perspective. But to my own opinion, computer is an electronic device which accepts data through input devices; processes data based on the defined instruction given to the processing unit, stores data in the storage device(s) and produces result of the processed data as information through output devices. Some input devices are mouse, keyboard, scanner, joystick, etc and some output devices are monitor, printer, speaker, etc. A computer can also be summarized as an electronic device which manipulates data and executes software programs according to a given list of instructions. A computer consists of 2 parts – hardware and software. The size of a computer varies considerably from very small to very big. The speed of computers also has a very large range. Computers have become indispensable in today’s world. Millions of people use computers all over the world. Although mechanical examples of computers have existed through much of recorded human history, the first electronic computers were developed in the mid-20th century (1940–1945). These were the size of a large room, consuming as much power as several hundred modern personal computers (PCs). Modern computers based on integrated circuits are millions to billions of times more capable than the early machines, and occupy a fraction of the space. Simple computers are small enough to fit into a wristwatch, and can be powered by a watch battery. Personal computers in their various forms are icons of the Information Age and are what most people think of as "computers".