Sahana 
Digital Computer is a machine or a device that helps to process any kind of information.
These are the devices through which we provide some input and get the output within a fraction of a second.
A printer is an external output device that uses computer data and produces output in the form of graphics/technology on paper.
A local area network (LAN) is a network (wired or wireless) of connected devices, which are present in a particular location.
WAN (Wide Area Network) is a network type that transmits voices, data, pictures, and videos across a broad-range geographical region.
A scanner is an electronic device that can scan handwritten or printed documents and pictures and transforms them into a digital file format.
Uses of Computer – A Computer is used by Designers, Engineers, Doctors, Teachers, and Students, Scientists in their everyday assignments.
Memory is the most important part of a computer system since the computer cannot perform basic tasks without it.
The primary memory consists of RAM and ROM.
The generation of computers is focused on significant technological developments. There are five generations of computers from 1st to 5th.
A computer is divided into two categories, which are known as computer hardware and software. Hardware is the physical component and Software is a set of instructions.
A computer bus is also known as a local bus, data bus, or address bus, a bus is a link between components or devices linked to a computer.