COMPUTER- Commanly Operating Machine Particularly Use in Trade Education & Research. Computer is an Electronic device, that can be instructed to carry out sequences of arithmetic, logical operations automatically by computer programming. In 21st century, computers have the ability to follow various generalized set of operations, known as programs. The programs enables the computers to perform a huge amount of tasks. Complete computer inclues the hardware and operating system i.e main software and peripheral equipment required and used for full operation can be referred as a computer system. *Prerecorded list of instructions can be excuted . * It can quickly store and retrieve large amount of data. In Early 19th century, english mechanical engineer and polymath "Charles Babbage" started the concept of a programmable computer as well as he invent the first mechanical computer and Supposed to be the "father of Computer". In modern Era , The Computers are u...