Types of Computers
* Lesson 3 - COMPUTER PERFORMANCE AND FEATURES 3.1 - TYPES
OF COMPUTERS  Types of Computers
Different types of computers are available in the market today. The most
common computer is the _Personal Computer (PC)_, typically used by
individuals and small businesses. A personal computer is a computer that is
designed for use by one person at a time. A personal computer is used in
the workplace to create documents, manage business records, and communicate
with others. It is used in schools to teach lessons, research over the
Internet, and work on assignments. You can also use a personal computer to
play games, view videos, and listen to music. Depending on the size and the
purpose of a personal computer, it can be categorized into four different
types: desktop, laptop, handheld, or tablet.
You select a computer depending on the tasks that you want it to perform.
For example, if you want to use the computer to edit photos or play complex
games, you need a computer with a fast CPU and a good display adapter. The
following table describes the different types of computer in detail: Scroll
down to read each description.
Desktop computers are made up of individual components such as a
monitor, a keyboard, a system unit, and a printer. Desktop computers are
not portable and are generally placed on the surface of a desk or a table.
The components of desktop computers can easily be replaced or upgraded.
Desktop computers usually have more memory, a larger hard drive, more
ports, and a bigger display than laptops and other portable computers.
Desktop computers can run continuously for long periods of time.
aptop computers are lightweight personal computers. Laptop computers are
smaller in size as compared to a desktop computer and are designed for
travel. Laptop computers are also called notebook_ computers. The main
feature of laptop computers is that they are small and portable. As the
name suggests, these can easily be placed on the lap of a user. Desktop
computers run on electricity only, while laptop computers run on
electricity or on batteries that can be recharged. However, laptop
computers consume more power than desktop computers with a similar hardware
setup. Laptop computers perform the same tasks as desktop computers, but
laptop computers generally cost more than desktop computers.
Handheld computers are devices used for specific everyday tasks, such as
managing personal data. These are smaller than laptops and provide fewer
features compared to desktop computers or laptops. These can also perform
basic word-processing activities and help you access the Internet. You can
also send and receive e-mail messages by using handheld computers. Several
handheld computer models can also work as cellular phones or digital
Tablet computers are fully functional computers that allow you to write
directly on the screen by using a tablet pen. You can also use the tablet
pen to perform mouse functions. Tablet computers, therefore, do not need a
keyboard and a mouse.
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