MyContrast

MyContrast
1.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 the computer.The operating system acts as a hosts for computing applications that are run on machine.

2.Computer system-a complete,working computer.The computer system includes not only the computer,but also any software and peripheral devices that are necessary to make the computer function.Every computer system,for example requires an operating system.

3.Data are pieces of information that represent the qualitative or quantitative attributes of a variable or set of variables. Data (plural of "datum") are typically the results of measurements and can be the basis of graphs, images, or observations of a set of variables. Data are often viewed as the lowest level of abstraction from which information and knowledge are derived.

4.Information as a concept has a diversity of meanings, from everyday usage to technical settings. Generally speaking, the concept of information is closely related to notions of constraint, communication, control, data, form, instruction, knowledge, meaning, mental stimulus, pattern, perception, and representation.

5.Computer data storage, often called storage or memory, refers to computer components, devices, and recording media that retain digital data used for computing for some interval of time. Computer data storage provides one of the core functions of the modern computer, that of information retention.

6.A data storage device is a device for recording (storing) information (data). Recording can be done using virtually any form of energy, spanning from manual muscle power in handwriting, to acoustic vibrations in phonographic recording, to electromagnetic energy modulating magnetic tape and optical discs.