Introduction to Motherboard
A motherboard is an electronic circuit board in a computer which interconnects hardware devices attached to it. At a minimum it includes one or more Central processing units, and the main processing activity of the computer takes place on it. However, other connected printed circuit boards may contain their own pre-processing or post-processing CPUs, to take some of the load off of the motherboard; these, together with other plug-in boards without CPUs, may be called "daughter boards." It was called a "mother" board in relation to these. A PC motherboard may have a series of sockets, allowing daughter boards to be plugged in directly. Other connectors on the motherboard allow communication through cables with various peripheral devices, both inside and outside the computer case.
Ports are used by a motherboard to interface with electronics both inside and outside of the computer.
An outdated piece of technology, serial ports were most often used to connect the mouse. By circa 2000, most personal computers stopped relying on serial ports and were replaced by PS/2 and/or USB ports.
PS/2 ports (now outdated) were for connecting peripherals such as your keyboard and mouse to the computer. PS/2 based mice and keyboards have now been replaced by USB ports as the popular standard. This trend for USB over PS/2 started in circa 2004.
Parallel ports are used to connect other peripherals such as joysticks, and more commonly, printers. Similar to the serial port, this technology is slowly being phased out in favour of USB. Parallel ports can still be found in many motherboards today.
Pronounced "scuzzy", this was used primarily as a connection interface for tape drives and hard disk drives. SCSI has been superseded in favour of newer and cheaper technologies such as USB and Firewire.
Universal Serial Bus (USB*) is a connectivity specification, currently at version 3, and known as "hi-speed USB".
USB is one of the most successful interconnect in computing history. It operates at 480 Mbps and can be found in over 2 billion PC, CE, and mobile devices. USB has strong consumer brand recognition and a reputation for ease-of-use. The next generation of USB, known as "super-speed USB", is capable of transferring data as speeds 10 times that of hi-speed USB (Thats a whopping 4.8 Gb/s!).
Technically known as the IEEE 1394 interface, but dubbed by Apple as Firewire, this connection medium hoped to surpass USB in terms of speed and popularity. While it did outperform USB v2 in speed tests, uptake was very limited due to the existing widespread use of USB.
Slots are an opening in a computer where a circuit board can be inserted to add new capabilities. All personal computers contain expansion slots for adding more memory, graphics capabilities, and support for special devices. Expansion slots come in different flavours, which will be described below. An alternative explanation for expansion slots can be found here.
Graphic cards- are also called video card's or a video adapter. They are in all PCs. Graphic cards convert signals into video signals so the images can be displayed on the monitor. While many graphics cards are built into the motherboard these days, enthusiasts will invest in standalone graphics cards with stronger and more powerful processing capabilities. This allows for heavy image editing, or better rendering and framerates in computer games.
Graphics cards are designed to offload rendering from the CPU. Graphics cards are powered by the motherboard and require a PCIX or PCIX 2.0 slot to install. Some cards require more power and thus will need a 6-8 pin connector that runs directly to the power supply. Graphics cards also include on board memory for efficient rendering. Typical sizes include 128-1024mb of memory. Today, high end graphics cards have multiple core processors that are largely parallel to increase texture fill and process more 3D objects in real time.
A sound card, also referred to as an audio card facilitates the input and output of audio signals to and from a computer under the control of computer programs. Sound cards for computers were uncommon until 1988, which left the single internal PC speaker as the only way early PC software could produce sound and music.
Uses of a sound card include the audio component's for multimedia applications such as games, video/audio editing software and music composition. Most computers today have sound capabilities built into the motherboard, while others require additional expansion cards.
Network Interface Cards (NICs)
Network Interface Cards can be a network card, network adapter, LAN Adapter or NIC (network interface card). They are a piece of computer hardware designed to allow computers to communicate over a computer network. Used for remote communication via cable. Data is transmitted over a cable network. The NIC connects computers and other devices such as printers. Many modern motherboards have NICs built in by default.
A PC Card (originally PCMCIA Card; short for Personal Computer Memory Card International Association) is a device that uses a specific peripheral interface designed for laptop computers.