introduction of a computer

Description

Computer
A computer is an electronic device, operating under the control of instructions stored
in its own memory that can accept data (input), process the data according to specified
rules, produce information (output), and store the information for future use1
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Functionalities of a computer2
Any digital computer carries out five functions in gross terms:
Computer Components
Any kind of computers consists of HARDWARE AND SOFTWARE.
Hardware:
Computer hardware is the collection of physical elements that constitutes a computer
system. Computer hardware refers to the physical parts or components of a computer
such as the monitor, mouse, keyboard, computer data storage, hard drive disk (HDD),
system unit (graphic cards, sound cards, memory, motherboard and chips), etc. all of
which are physical objects that can be touched.
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1 Vermaat, Misty E. Microsoft Office 2013 Introductory. Cengage Learning, p.IT3. 2014
2 http://www.tutorialspoint.com/computer_fundamentals/computer_quick_guide.htm