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There are various computer products which help the device to operate properly some of them are given below.

Scanner: This is Computer input device that uses a light beam to scan codes, text, or graphic images directly into a computer or computer system.

Bar-code scanners are used widely at point-of-sale terminals in retail stores. A handheld scanner or bar-code pen is moved across the code, or the code itself is moved by hand across a scanner built into a checkout counter or other surface, and the computer stores or immediately processes the data in the bar code. After identifying the product through its bar code, the computer determines its price and feeds that information into the cash register. Optical scanners are also used in fax machines and to input graphic material directly into personal computers.

Printer: Electronic device that accepts text files or images from a computer and transfers them to a medium such as paper or film. It can be connected directly to the computer or indirectly via a network.

Monitor: A Computer Monitor is a display board it show all data that is write by user in other word we can say that it is an interface between the computer and the user.

I pod: This is a device of portable media players. The full-sized model stores media on an internal hard drive, while the other models use flash memory, allowing for a physically smaller size. IPods can hold audio, photos, movies, and games, though most are used primarily as music players.

PDAs: also called handhelds or palmtops, have definitely evolved over the years. Not only can they manage your personal information, such as contacts, appointments, and to-do lists, today's devices can also connect to the Internet, act as global positioning system (GPS) devices, and run multimedia software. What's more, manufacturers have combined PDAs with cell phones, multimedia players and other electronic gadgetry.

CPU: The CPU is linked to main memory, peripheral equipment (including input/output devices), and storage units. The control unit integrates computer operations. It selects instructions from the main memory in proper sequence and sends them to the instruction-decoding unit.

Mother Board: A mother board is also known as main board system. Most of peripheral is connect to mother board with ribbon cable. Typical computer is built with the microprocessor, main memory, and other basic components on the motherboard.

Memory: The ability to store instructions that form a computer program and the information in the storage device is called memory. These devices are also used for storing the data. A Digital computer represents information using the binary numeral system. As Text, numbers, pictures, audio, and nearly any other form of information.

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