A computer is an electronic device that helps people perform different tasks. An electronic device for the storage and processing of information. An electronic device stores, retrieves, and processes data, and can be programmed with instructions. It is a programmable machine that inputs, processes, and outputs data. It is a device that uses digital technology to process and manipulate information.
There are 6 types of computers namely MICROCOMPUTER, synonymous with personal computer (PC) or a computer that depends on a microprocessor. There are types of Microcomputer, (1)Personal Computer, a computer designed for an individual user and (2)Portable Computer, a computer designed to be moved from one place to another. There are types of Portable Computer, (1) Laptop or Notebook Computer. It has similar computing power to personal computers but are much lighter and portable. It has a removable, chargeable battery pack. (2)Sub-notebook Computer, slightly lighter and smaller than a full-sized notebook computer, and smaller keyboard and screen. (3)PDA or Personal Digital Assistant, handheld computers designed as personal computers, but became versatile over the year, known as pocket computers or palmtop computers. PDAs can be used in calculations, as clock calendar, playing computer games, accessing rhe Internet, sending and receiving E-mails, video recording, and many more. (4)Tablet PC. It is a notebook- or a slate-shaped mobile computer. Its touch screen allows the user to operate the computer using a stylus or digital pen, or fingertip. The computer is linked to a network using wireless or wired link.
WORKSTATION, a desktop computer that has a more powerful processor, additional memory and enhaced capabilities for performing a special group of task.
MINICOMPUTER, in size and power, it lies between workstations and mainframes. It is a multiprocessing system capable of supporting 4-200 users simultaneously.
MAINFRAME COMPUTER, a very large and expensive computer capable of supporting hundreds, or even thousands of users simultaneously.
SUPERCOMPUTER, the fastest type of computer, channels all its power into executing a few programs as fast as possible.
WEARABLE COMPUTER, the latest trend in computing, integrated into watches, visors, cellphones, and even clothing.
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