A computer is an electronic device that can store, process, and manipulate data. It consists of both hardware and software. Hardware refers to the physical parts of the computer like the keyboard, mouse, and internal components. Software refers to the set of instructions that tells the hardware what to do. There are different types of computers including desktops, laptops, and tablets. Desktops are designed to sit on a desk while laptops and tablets are more portable. Key internal components of a computer include the central processing unit (CPU), monitor, keyboard, and mouse.

1. Prepared By
Muhammad Younus

2. What is a computer?
A computer is an electronic device that manipulates information, or
data. It has the ability to store, retrieve, and process data. You may
already know that you can use a computer to type documents, send
email, play games, and browse the Web. You can also use it to edit
or create spreadsheets, presentations, and even videos.

3. Hardware
Hardware is any part of your
computer that has a physical
structure, such as the keyboard
or mouse. It also includes all of the
computer's internal parts, which
you can see in the image

4. Software
Software is any set of
instructions that tells the
hardware what to do and how to
do it.

6. Desktop computers
Many people use desktop
computers at work, home, and
school. Desktop computers are
designed to be placed on a desk,
and they're typically made up of a
few different parts, including the
computer case, monitor,
keyboard, and mouse.

7. Laptop computers
The second type of computer you
may be familiar with is a laptop
computer, commonly called a
laptop. Laptops are battery-
powered computers that are more
portable than desktops, allowing
you to use them almost anywhere.

8. Tablet computers
Tablet computers—or tablets—
are handheld computers that are
even more portable than laptops.
Instead of a keyboard and mouse,
tablets use a touch-sensitive
screen for typing and navigation.
The iPad is an example of a tablet.

10. CPU
(Central Processing Unit)
A central processing unit (CPU) is the electronic circuitry within a
computer that carries out the instructions of a computer program by
performing the basic arithmetic, logical, control and input/output (I/O)
operations specified by the instructions.. The front of the case usually
has an On/Off button and one or more optical drives.
CPU comes in different shapes and sizes.

14. Monitor
The monitor works with a video card, located inside the computer
case, to display images and text on the screen. Most monitors have
control buttons that allow you to change your monitor's display
settings, and some monitors also have built-in speakers.
Newer monitors usually have LCD (liquid crystal display) or LED (light-
emitting diode) displays. These can be made very thin, and they are
often called flat-panel displays. Older monitors use CRT (cathode ray
tube) displays.

18. Keyboard
• The keyboard is one of the main ways to communicate with a
computer. There are many different types of keyboards, but most are
very similar and allow you to accomplish the same basic tasks.

21. Mouse
The mouse is another important tool for communicating with
computers. Commonly known as a pointing device, it lets you point to
objects on the screen, click on them, and move them.

24. Paint
• A paint program is a software
graphics program that allows the
user to draw or paint bitmapped
images on a computer.

25. Any Questions???