As the world's largest independent marketplace for new, used and rare books, you always get the best in service and value when you buy from, and all of your purchases are backed by our return guarantee. Paperback Find our best selection and offers online, with FREE Click & Collect or UK delivery. Hardback It contains a stack of metal platters, each coated with iron oxide, that spin on a spindle and the entire unit is encased in a sealed chamber.This is plastic tape, usually made of Mylar that is coated with iron oxide, thereby enabling the introduction (writing); retention (memory) and reading of magnetically recorded information.

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The ALU thinks in bits (i.e. A plotter gives a hard copy of the output.

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It consists of keys that are capable of inputting alphabets, numbers and special characters.

This website uses cookies to improve your experience. Software is a set of electronic instructions consisting of complex codes (Programs) that make the computer perform tasks. World of Books sells used books online to over 190 countries worldwide.

Information on a floppy disk is recorded in the magnetized states of particles of iron oxides evenly placed upon concentric circles known as tracks.It is a non-removable enclosed magnetic disk included in most PCs.


The best use of tape storage is for data that you do not use very often.An optical disc drive (ODD) is a disk drive that uses laser light or electromagnetic waves for reading or writing data to or from optical discs (normally CD-ROM). NOT FOR REDISTRIBUTION.

Paperback Consider changing the search query.No elements found. Paperback When any mathematical calculation or decision/logic needs to be carried out, the instruction is passed on to the ALU.

Computer hardware includes the physical parts of a computer, such as the case, central processing unit (CPU), monitor, mouse, keyboard, computer data storage, graphics card, sound card, speakers and motherboard.. By contrast, software is the set of instructions that can be stored and run by hardware.

A CD-ROM is a pre-pressed optical compact disc which contains data. It performs all types of data processing operations, stores data, intermediate results and instructions (program). The sharpness of the image depends upon the number of pixels.Printer is an output device, which is used to print information on paper.It is a device used to move cursor position on a monitor screen. Parts that were once hand made at a cost of thousands of man-hours are now mass produced for a fraction of a rupee.