Page 12 - iPro_trackGPT_V5_Class7
P. 12
Sound Card
A sound card is an important hardware component located inside the
CPU case. Its main function is to convert analog sound signals into
digital data and vice versa, allowing the computer to produce audio
output. This enables the computer to play music and other sounds
through connected output devices, such as speakers or headphones.
The sound card has various audio ports to easily connect these devices,
ensuring smooth audio playback.
Video Card
A video card, also known as a graphics card, is an expansion card
designed to convert digital data into video signals and vice versa.
This conversion allows for the display of visual output on monitors
and TVs. In addition to basic video output, a video card enhances
image and video quality, improving graphics performance. It includes
its own processing and memory capabilities, making it crucial for
rendering high-quality visuals in games, videos, and other graphic-
intensive applications.
External Hardware Components
External hardware components, also known as peripheral devices, are devices located outside
the CPU box/cabinet. These devices connect to the computer through ports or wirelessly and can
be classified into three categories:
External Hardware Components
Input Devices Output Devices Storage Devices
Let us discuss these in detail.
Input Devices
A computer receives data and instructions through input devices. This data can be in various
forms, including numbers, text, sound, or graphics. Some examples of input devices include:
Keyboard: The primary input device for
computers, a keyboard resembles a traditional
typewriter with buttons known as keys. By
pressing these keys, users can enter data in the
form of words and numbers.
A standard keyboard has 104 keys, which can be classified as follows:
• Alphanumeric keys: (A-Z, a-z, 0-9)
10 TrackGPT iPRO (V5.0)-VII

