The System Unit

Flash Memory
Flash memory is a chip that can be used to store informations even without a power source. Using units of memories which are called blocks, informations on a flash memory can be erased or reprogrammed easily. It can be commonly found in USB pendrives, memory cards or MP3 players. With flash memory it is much easier to carry computer data around.

A USB pendrive.

Graphic Card
A graphic card is a hardware that is essential to be installed into a computer in order for the computer to produce images. It is a hardware that manages and manipulates information and sends information for the computer screen to project it. A high end graphic card is necessary to support programs like games or graphical applications.

Graphic Card

Sound Card
Much similar to a graphic card. Except that sound card is used for producing sound data instead. Sound cards are usually used to support a sound system such as a surround sound system or a woofer.

Sound card.

Network Interface Card
A network interface card (NIC) is a hardware that connects the computer into a local area network (LAN). Using nodes, Networked computers connect with each other using a protocol or language that transmits data. The network interface card functions as a medium for the connected computers to send data among each other on the LAN.

NIC Card.

Plug and Play
Plug and Play (PnP) is a system Microsoft developed that gives users the ability to plug a device into a computer and use it instantly. Before PnP was developed users have to specifically tell the computer system about the device connected before being able to use it.

Plug and Play.

Bus Line
The bus line enables different parts of the CPU to communicate with each other using an electronic line. The data that flows through the bus lines are called bits. A system that has more bus lines means a faster and stronger working system that is able to transfer data faster than CPU with lesser bus lines.

Bus lines on a motherboard.

HDMI
HDMI (High-Definition Multimedia Interface) is a digital solution for audio and video to be played on a home theater from an electronic equipment. A HDMI cable can replace up to eleven normal cables when connecting devices such as TVs or DVD players.

HDMI Cables.

Cache Memory
A memory cache, also known as RAM cache, is memory made up of high speed dynamic Ram (DRAM) used for main memory. Memory caching is effective because most programs access the same data or instructions over and over.