• Information is knowledge derived from study, experience (by the senses), or instruction. It is communication intelligence. It is any kind of knowledge that is exchangeable amongst people, about things, facts concepts, etc., in some context." Information is interpreted data.
• Data are facts, statistics used for reference or analysis. Numbers, characters, symbols, images etc., which can be processed by a computer. Data must be interpreted, by human or machine, to derive meaning. It is a representation of information. The Latin word "datum" which means "that which is given. Data is any sort of raw fact.
Data Storage vs. Computer Storage
• Computer storage is the holding of data in an electromagnetic form for access by a computer processor. Primary storage is data in ramdom access memory (RAM) and other "built-in" devices. Secondary storage is data on hard disk, tapes, and other external devices.
• Data Storage device is a storage medium. Most often the term is used with computers. Data storage devices can permanently hold data, like files. Common data strorage devices are: USB flash drives, Hard disk drives, Compact discs, DVDs. A storage device may hold information,process information, or both. A device that only holds information is a recording medium.
Operating system vs. Computer System
• Operating system (commonly abbreviated to either OS or O/S) is an interface between hardware and user; it is responsible for the management and coordination of activities and the sharing of the resources of thr computer. The operating system acts as a host, one of the purposes of an operatting system is to handle the details of the operation of the hardware. This relieves application programs from having to manage these details and makes it easier to write applications. Almost all computers (including handheld computers, desktop computers, super computers, video game consoles) as well as some robots, domestic appliances (dishwashers, washing machines), and portable media players use an operating system of some type. Some of the oldest models may however use an embedded operating system that may be contained on a compact disk or other data storage device.
• Computer system includes not only the computer, but also any software and peripheral devices that are necessary to make the computer function. Evry computer system, for example, requires an operating system.
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