COMPUTER KYA HAI

     what is computer

Computer aaj humara aisa aang ban gya hai jiske bina koi kam hi nahi ho sakta humara isliye aaj me  is post ke jariye Computer ka basic gyan aap longo ke saath share kr raha hoon .  

    

 What is computer:

Computer is an electronic device that is designed to work with Information. The termcomputer is derived from the Latin term ‘computare’, this means to calculate or programmable machine.Computer can not do anything without a Program. It represents the decimal numbers through a string of binary digits. The Word 'Computer' usually refers to the Unit plus Interna cenral memory

Charles Babbage is called the "Grand Father" of the computer. The First mechanical computer designed by Charles Babbage was called Analytical Engine. It uses read-only memory in the form of punch cards.

Computer is an advanced electronic device that takes raw data as input from the user and processes these data under the control of set of instructions (called program) and gives the result (output) and saves output for the future use. It can process both numerical and non-numerical (arithmetic and logical) calculations.

Digital Computer Definition

The basic components of a modern digital computer are: input device output device , central processor unit ( cpu) mass storage device and memory. A Typical modern computer uses LSI Chips.  

Four Functions about computer are:

accepts data	Input
processes data	Processing
produces output	Output
stores results	Storage

Input (Data):

Input is the raw information  entered into a computer from the input devices. It is the collection of letters, numbers, images etc.

Process:

Process is the operation of data as per given instruction. It is totally internal process of the computer system.

Output:

Output is the processed data given by computer after data processing. Output is also called as Result. We can save these results in the  storage device  for the future use.

Computer Classification: By Size and Power

Computers differ based on their data processing abilities. They are classified according to purpose, data handling and functionality.

According to functionality, computer are classified as:

• Analog Computer: a computer that resents numbers by some continuously variable physical quantity, whose variations mimic the properties of some system being modeled.

• Personal computer: a personel computer  is a computsmall and low cost. The term "personal computer" is used to describe desktop computers (desktops).

• Workstation: A terminal or desktop computer in a network. In this context, workstation is just a generic term for a user's machine (client machine) in contrast to a "server" or "mainframe."

• Minicomputer: A minicomputer isn't very mini. At least, not in the way most of us think of mini. You know how big your personal computer is and its related family.

• Mainframe: It refers to the kind of large computer that runs an entire corporation.

• Supercomputer: Itis the biggest, fastest, and most expensive computers on earth.

• Microcomputer: Your personal  computer  is a microcomputer

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