Topics: Personal computer, Laptop, Computer Pages: 3 (269 words) Published: March 12, 2015
Topic I – What is a Computer?

Computer - is an electronic device that manipulates information, or "data." All types of computers consist of two basic parts:
Hardware is any part of your computer that has a physical structure Software is any set of instructions that tells the hardware what to do

Different Types of Computers

Many people use desktop computers at work, home, school, or the library. They can be small, medium, or large in style, and usually sit on a desk. Laptop
Laptops are battery- or AC-powered personal computers that are more portable than desktop computers, allowing you to use them almost anywhere. Servers
A server is a computer that "serves up" information to other computers on a network. Many businesses have file servers that employees can use to store and share files.

Parts of the Computer
the metal and plastic box that contains the main components of the computer. It houses the motherboard, central processing unit (CPU), the power supply, and more.

it works with a video card, located inside the computer case, to display images and text on the screen.

is the primary way we communicate with the computer and enter data.

a peripheral that is known as a pointing device.

is sometimes called the brain of the computer, and its job is to carry out commands.

is the computer's main circuit board.

Power Supply
converts the power from the wall outlet to the type of power needed by the computer.

Random Access Memory
is the system's short-term memory.

Hard Drive
is the data center of the computer
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