Jumat, 22 Juli 2011

Different types of Computer


Based on the operational principle of computers, they are categorized as analog computers and hybrid computers.

Analog Computers: These are almost extinct today. These are different from a digital computer because an analog computer can perform several mathematical operations simultaneously. 

Hybrid Computers: These computers are a combination of both digital and analog computers. In this type of computers, the digital segments perform process control by conversion of analog signals to digital ones.

Following are some of the other important types of computers.

Mainframe Computers: Large organizations use mainframes for highly critical applications such as bulk data processing and ERP.

Microcomputers: A computer with a microprocessor and its central processing unit is known as a microcomputer. When supplemented with a keyboard and a mouse, microcomputers can be called as personal computers. A monitor, a keyboard and other similar input output devices, computer memory in the form of RAM and a power supply unit come packaged in a microcomputer. These computers can fit on desks or tables and serve as the best choices for single-user tasks.

Personal computers come in a variety of forms such as desktops, laptops and personal digital assistants. The spare parts of a desktop computer are readily available at relative lower costs. Laptops run on a single battery or an external adapter that charges the computer batteries.

Personal Digital Assistants (PDAs): It is a handheld computer and popularly known as a palmtop.

Minicomputers: In terms of size and processing capacity, minicomputers lie in between mainframes and microcomputers. Minicomputers are also called mid-range systems or workstations.

Supercomputers: The highly calculation-intensive tasks can be effectively performed by means of supercomputers.

Wearable Computers: A record-setting step in the evolution of computers was the creation of wearable computers. Military and health professionals have incorporated wearable computers into their daily routine, as a part of such studies. When the users’ hands and sensory organs are engaged in other activities, wearable computers are of great help in tracking human actions.

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