Multitasking is the ability to execute more than one computer task (such as the operation of an application program) at a time. The operating system is able to keep track of where you are in these tasks and go from one to the other without losing information.
The terms multitasking and multiprocessing are often used interchangeably, although multiprocessing sometimes implies that more than one CPU is involved.
In multitasking, only one CPU is involved, but it switches from one program to another so quickly that it gives the appearance of executing all of the...
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Multiprocessing is the coordinated processing of programs by more than one computer processor. Multiprocessing is a general term that can mean the dynamic assignment of a program to one of two or more computers working in tandem or can involve multiple computers working on the same program at the same time (in parallel).
Multiprocessing can be said to be either asymmetric or symmetric. The term refers to how the operating system divides tasks between the processors in the system....
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A multi-user Operating System allows for multiple users to use the same computer at the same time and/or different times. See our multi-user dictionary definition for a complete definition for a complete definition. Some examples of multi-user Operating Systems are Linux, Unix, Windows.
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Computer data storage, computer memory, and often casually storage or memory refer 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. It is one of the fundamental components of all modern computers, and coupled with a central processing unit (CPU, a processor).
In contemporary usage, memory usually refers to a form of semiconductor storage known as random access memory (RAM) and sometimes...
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An output device receives information from the computer and translates it from machine language to a form that humans can read or so that another machine can read the information. An output device is any piece of computer hardware equipment used to communicate the results of data processing carried out by an information processing system (such as a computer) to the outside world.
Electronic output devices can be mechanical, audio, or visual. Mechanical outputs include motors, solenoids, and other electromagnetic devices. Audio outputs include buzzers, loudspeakers, piezo transducers,...
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An input device is a peripheral used to transfer data from the outside world into a computer system. In other words, it is any machine that feeds data into a computer.
Input devices convert the user’s actions and analog data (sound, graphics, pictures) into digital electronic signals that can be ‘handled’ or ‘read’ by a computer. Digital data (such as from barcode readers, scanners, etc.) does not require any conversion and is input direct into a computer. It is through input devices that a user exercises control over a computer, its operations,...
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interesting info 
