TLE ICT LESSON 3

system unit

contains the main components of a desktop computer

internal hardware

is the hardware inside the computer or is a device that is installed within the computer

computer case, motherboard, processor (CPU), RAM, hard drives (HDD/SSD), power supply, heat sinkfan

parts of the system unit

computer case/chassis

a pc case, also known as a computer chassis or tower. is the enclosure that houses the main components of a personal computer

motherboard

is one of the most essential parts of a computer system. it is a sheet of plastic that holds all the circuitry to connect the various components of a computer system

processor (CPU)

is the primary component of a computer that acts as its “control center”, also referred to as the “brain of the computer”, that runs the machine’s operating system and apps

central processing unit

cpu stands for

random access memory

ram stands for

ram (random access memory)

temporary memory that stores data for quick access while the computer is running, helping programs and tasks run faster

hard drives (HDD/SSD)

storage devices that holds the operating system, programs, and user data. it stores data permanently

power supply

converts main ac to low-voltage regulated dc power for the internal components of a computer

heat sink fan

is a component used in electronic devices to dissipate heat and prevent overheating. made of thermally conductive material, such as aluminum or copper. and is designed to absorb and disperse heat generated by electronic components

video card, audio/sound card, network card, optical disc

add-on devices

optical disc

is a storage medium used to store digital data through optical technology. data is recorded and read using lasers. making it a popular storage format for various applications.

video card

also known as graphics card or graphics processing unit (GPU). it handles rendering images, videos and 3d graphics. it is essential for gaming, graphic design, and video editing

graphics processing unit

gpu stands for

audio/sound card

this card enables the computer to produce sound through audio device

network card

also known as network interface card, works as the interface between a computer and a network cable, and how it prepares, sends, and controls data on the network.

read only memory

rom stands for

rom (read only memory)

is a non-volatile storage and does not require a constant power to retain information stored on it.

network interface card

nic stands for

hard disk drive

are commonly used as the main storage device on a computer. it stores your operating and system software and other files on your computer.