The system unit, also known as the system chassis,is a container that houses most of the electronic components that make up a computer system. In this new post, I will talk about system unit that can be found in each computer.
(1)Sockets [Internet]
An Internet socket, commonly called as a socket or network socket, is a communication end-point unique to a machine communicating on an Internet Protocol-based network, such as the Internet. It also used as a name for an application programming interface (ATP) for the TCP/IP protocal stack, usually provided by operating system. It connects to the HTTP daemon running on the local machine and returns the contents of the root index URL.
(2)Chips
A computer chip is a small electronic circuit, also known as an intergrated circuit. This is the basic components of computer. It is small and and made of semiconductors that is usually composed of silicon, on which several tiny components including transistors are embedded and used to transmit electronic data signals.
(3)Slots
Slot is an opening in a computer where can insert a printed circuit board. It also called as expansion slot because it allows to expand the capabilities of a computer. It comprises the operation issue and data paths machinery surrounding a collection of one or more functional units which share these resources.
(4)Bus Lines
A bus is a subsystem that transfers data between computer components inside a compuer or between computers. It provides a data path between the CPU and attached devices such as keyboard,speakers,mouse and etc.
(5)Graphics Card
Graphics card converts information from the CPU into the display we see on our monitor's screen. It also performs special visual functions, such as reflections in computer games. If the graphics card is inadequate, the display will lack continuity, showing stutters.
(6)Sound Card
Sound card is a peripheral device in the form of a card used for producing sound and music. Although some PCs come with a built-in speakers, it was originally tied to the CPU and did not do a good job of reproducing complex sounds, this is because it takes most of the processor's power to produce only marginal sound. For sound card, it does it effortlessly and creates a much better reproduction. Most motherboards today come with some kind of external sound chip built-in, just in case we want decent sound without attaching a separate sound card.
(7)Modem Card
A modem card is necessary for us to connect to the Internet using a network. It can be wireless or installed inside of a user's PC. A wireless modem can fit into a computer's motherboard or be an external USB card.
(8)Network Interface Card
A network interface card (NIC) is an adapter which installed in a computer to provide a the connection point to a network. It provides an attachment point for a specific type of cable,such as coaxial cable, twisted-pair cable, or fiber-optic cable. NIC for wireless LAN typically have an antenna for communication with a base station. Antenna is a a metallic apparatus for sending or receiving electromagnetic waves.
(9)Plug and Play
Plug and Play(PnP) is a capability that allows users to plug a device into a computer and have the computer recognize that the device is there. It was originally a set of specific hardware and software standards developed by Microsoft, Intel, Linux and others. PnP can associated with the ability to plug any device into a computer and have it work or play immediately. However, so devices are not plug and play, they have to be installed before it works.
(10)Serial Port
A serial port is a socket on a computer used to connect a modem, data acquisition terminal or other device via a serial interface (one data bit following the other). It provides very slow speeds and has been superseded by USB and other faster interfaces for peripheral connections to desktop computers. Although still widely used in data acquisition, the serial port is no longer found on new computers.
(11)Parallel Port
Parallel port is a hardware interface that transfers one or more bytes simultaneously. It is a socket at the back of a computer for connecting external equipment or peripherals, especially printers. Although some business printers may still offer parallel ports, consumer-based printers and new computers have only USB. However, parallel port devices can be hooked up to new computers with a USB-to-parallel adapter cable.
(12)Universal Serial Bus Port
A universal serial bus port (USB) has virtually replaced serial and parallel port. It is a type of serial bus that allows peripheral devices such as modems, printers, etc to be easily connected to a computer without an adapter card nor rebooting the computer. The USB standard, developed by several major computer and telecommunications companies, supports data-transfer speeds up to 12 megabits per second, multiple data streams, and up to 127 peripherals.
(13)FireWire Port
FireWire port has a comparable speed to USB 2.0 port. It provides connections to specialized FireWire devices such as storage devices and camcorders. FireWire supports 63 devices, real-time data transfer, hot swapping and simultaneous multiple speeds. It is widely used to download video from digital camcorders to the computer and is also used in other A/V applications.
That's all for this post. Hope you can get to know what system unit is. For futher information, you can search it through webside.^^
