What is Computer : Computer is an electronic device that is proposed to work with Information. The term PC is gotten from the Latin articulation 'computare', along these lines to figure or programmable machine. PC can not do anything without a Program. It addresses the decimal numbers through a string of twofold digits. The Word 'PC' generally speaking suggests the Center Processor Unit notwithstanding Internal memory.

Charles Babbage

Charles Babbage is known as the "Granddad" of the PC. The First mechanical PC laid out by Charles Babbage was called Analytical Engine. It uses read-only memory as punch cards.

PC is an advanced electronic contraption that takes rough data as commitment from the customer and methods these data under the control of set of rules (called program) and gives the result (yield) and extras yield for the future use. It can process both numerical and non-numerical (calculating and sensible) figurings.

What is Computer

Digital Computer Definition:

The essential sections of a forefront propelled PC are: Input Device, Output Device, Central Processor Unit (CPU), mass storing contraption and memory. A Typical present day PC uses LSI Chips. Four Functions about PC are:


Data is the unrefined information went into a PC from the information contraptions. It is the social occasion of letters, numbers, pictures et cetera. 


Process is the assignment of data as per provided guidance. It is completely inside system of the PC structure. 


Output is the taken care of data given by PC after data getting ready. Output is moreover called as Result. We can save these results in the limit contraptions for the future use.

PC Classification: By Size and Power 

PCs contrast in view of their information handling capacities. They are characterized by reason, information taking care of and usefulness. 
As indicated by usefulness, PCs are delegated:

  • Personal computer: A personal computer is a computer small and low cost. The term"personal computer" is used to describe desktop computers (desktops).
  • 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.
  •  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."
  • Analog Computer: A computer that represents numbers by some continuously variable physical quantity, whose variations mimic the properties of some system being modeled.
  •  Microcomputer: Your personal computer is a microcomputer.
  •  Supercomputer: It is the biggest, fastest, and most expensive computers on earth.
  •  Mainframe: It refers to the kind of large computer that runs an entire corporation.