what is a computer

A computer is an electronic device that can be programmed to carry out sequences of arithmetic or logical operations automatically. It can manipulate information or data, store, retrieve, and process data. A computer system is a complete computer that includes the hardware, operating system, and peripheral equipment needed and used for full operation. The hardware of a computer includes at least one processing element, typically a central processing unit (CPU) in the form of a microprocessor, along with some type of computer memory, typically semiconductor memory chips. The processing element carries out arithmetic and logical operations, and a sequencing and control unit can change the order of operations in response to. The software of a computer includes programs that enable computers to perform a wide range of tasks. Computers can be used to type documents, send email, play games, browse the web, edit or create spreadsheets, presentations, and even videos. They can also be used to perform numerical as well as non-numerical calculations.