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1. a machine that can store
and process information.

2. Hardware – any physical device or
equipment used in or with a
computer system (anything you can
see and touch
Software – a set of instructions or programs that tells a
computer what to do or how to perform a specific task
(computer software runs on hardware).
Main types of software – systems software and application
software.

3. Operating system
An operating system (OS) is system software
that manages computer hardware and
software resources, and provides common
services for computer programs.

4. A motherboard is the main printed circuit
board (PCB) in a computer. The motherboard
is a computer's central communications
backbone connectivity point, through which all
components and external peripherals connect.

5. Input Device Definition: A piece of equipment/hardware which helps
us enter data into a computer is called an input device. For example
keyboard, mouse, etc.
Output Device Definition: A piece of equipment/hardware which gives
out the result of the entered input, once it is processed (i.e. converts
data from machine language to a human-understandable language), is
called an output device. For example printer, monitor, etc.