Some Basics about Computer for Starters

Computer

Personal Computer

      A computer is a programmable machine that receives input, stores and manipulates data , and provides output in a useful format.In other words a computer is a digital electronic alpha-numeric data processing machine in which we can input data, the computer will process it and give us an output.

Digital
  Computers are digital machines because they can only read information as two signals-on or off. These are called digital signals and tightly related to the binary numbers 1 and 0. Any data inside a computer is in the form of combinations of 1s and 0s and will be converted to on and off signals respectively for the devices to identify it. This method of computation, also known as the binary system.

Data
The term data refers to groups of information or a collection of numbers, characters, images or other outputs from devices that collect information to convert physical quantities into symbols, that are unprocessed.

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