A computer is an electronic device that stores, retrieves, and processes data according to a list of instructions. It has hardware and software components. Computers are popular due to their speed, accuracy, storage capabilities, ability to multitask, and ability to communicate. Computers are used in many fields like business, entertainment, education, medicine, and finance. Communication refers to transmitting or exchanging information. Early forms of communication included telegraphs, radio, and verbal/written words. The basic language computers understand is binary represented by 0s and 1s.

1. Basic Hardware Introduction to Computer

5. Application Areas of Computers Business Area Entertainment Area Education Area Medicinal Area Finance Area

11. How Computer Works INPUT Control Unit STORAGE OUTPUT Arithmetic and Logical Unit

12. Components & Peripherals of Computer