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• Audio Port: This port connects external audio devices such as speakers,
headphones, and microphones to the computer.
• Ethernet Port: This port connects the network cable to the computer, providing
Internet and network access.
Sound Card
A sound card is a hardware part of the computer system. It is located
inside the CPU box and is used to convert the sound into digital data and
vice-versa. It allows a computer to play music with the help of an output
device like a speaker. A sound card has audio ports through which we can connect the speakers
and headphones to the computer.
Video Card
A Video card, also known as a graphic card. It is used to convert digital
data into video form and vice-versa. After converting the digital data into
video, it displays the output on the display devices like monitors and TVs.
A video card is also used to improve the quality of the pictures and videos.
It has processing as well as storage capability.
External Hardware Components
The hardware components located outside the CPU box are called External Hardware
Components. As these components are connected to the computer externally, they are also
called Peripheral Components. External hardware components can be classified into three
categories:
External Hardware Components
Input Devices Output Devices Storage Devices Hybrid Devices
Let us discuss these in detail.
Input Devices
A computer accepts data and instructions from you through input devices. Data can be in the
form of numbers, text, sound, or graphics.
Some of the input devices are:
• Keyboard: It is a standard input device. It is mainly used to
type text and to send the instructions to a computer with the
help of keys. Keyboard keys are the buttons that represent
alphabets, numerics, alphanumerics and special characters.
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iPlus (Ver. 2.1)-VII

