Introduction to Computer
Computer is an electronic device and general purpose machine, commonly consisting of digital circuitry, that accepts (inputs), stores, manipulates, and generates (outputs) data in the form of numbers, text, graphics, voice, video files, or electrical signals, in accordance with instructions called a program. The term computer is derived from the Latin term ‘computare’, this means to calculate or programmable machine. Computer cannot do anything without a Program and that program written by a programmer. So computer is just a machine which works according to programmer instruction.
A computer system consists of two major elements: hardware and software. Computer hardware is the collection of all the parts you can physically touch. Computer software, on the other hand, is not something you can touch. Software is a set of instructions for a computer to perform specific operations. You need both hardware and software for a computer system to work.