A computer is a machine that performs four basic operations: input, processing, output and storage. It takes in data through input devices like a mouse and keyboard, processes the data using the central processing unit (CPU), provides the results through output, and stores the processed data and programs on storage devices like hard disks for future use, in a continuous information processing cycle.

1. Computer : Basic Definitions

2. Computer A computer is a machine that performs four basic operations: input, processing, output and storage. These four operations are called the information-processing cycle.

3. Information-processing cycle. PROCESSING OUTPUT STORAGE INPUT

4. Input Devices that enable you to enter data into the computer for processing. Examples: mouse and keyboard

5. Processing Computers transform data into information. Information is data that have been simplified and organized in a way that people can use. Example: CPU

6. Output Computer provides the results of the processing operation in a way that people can understand.

7. Storage Save the result of processing to be used again later. Storage devices hold all of the programs and data that the computer system uses. Examples: floppy disk and hard disk