Hardware Connections

And wireless connections


A VGA connector (Video Graphics Array) provides an audio and video connection. It is a cable used for transmitting video signals. The connector is found on computer monitors and some high definition television sets.

Line in and Line out

Line out is a type of connector found on audio devices used to attach audio components such as speakers.

Line in a type of connector found on audio devices to attach a device, such as a microphone, for recording audio. Line-in can be analog or digital. Digital line-in is also called optical line-in.


Firewire is used to connect external devices to a computer and is popular to use with video and audio devices like digital camcorders. The reason that it is popular is because the transfer of data is very quick

SD/ Media card slot

SD and media card slots are used to transfer data onto computers or laptops. SD cards are most commonly used in cameras to store photos and you can then transfer them onto other digital devices.


Is a french originated standard and a 21 pin connector for connecting audio visual (AV) equipment together. it is the most common connection method in Europe for AV. It is designed to carry analogue standard definition content.


Is a cable that transfers audio data. It is different from most other cables as it doesn't experience interference. This is because the electrical signal is converted to a light signal that passes along reflective tube within the cable.


HDMI (High-Definition Multimedia Interface) is a compact audio/video interface for transferring uncompressed digital audio/video data from an HDMI-compliant device "the source device" to a compatible digital audio device, computer monitor, video projector or TV. HDMI is a digital replacement for existing analog video standards.


Short for Universal Serial Bus, an external bus standard that supports data transfer rates of 12 Mbps. A single USB port can be used to connect up to 127 peripheral devices, such as mice, modems, and keyboards.

Wireless connections


Infrared connectivity is an old wireless technology used to connect two electronic devices. It uses a beam of infrared light to transmit information and so requires direct line of sight and operates only at close range. Many home devices such as TVs and DVD players still use IR remote controls. Some smartphones are capable of using their IR port to control these devises but that usually requires third-party software. Transfer speeds are roughly the same as traditional parallel ports.


Bluetooth is a wireless technology for exchanging data over short distances. The chip can be plugged into computers, digital cameras and mobile phones. It is very secure and can connect up to eight devices (items of electronic equipment) at the same time. Bluetooth is particularly convenient in certain situations – for example, when transferring files from one mobile phone to another without cables. Sending music and photos between a PC and a mobile phone is another useful application. Bluetooth does not require a clear line of sight between the synced devices. The battery usage during a single transfer is negligible, but there are some people who leave the device switched on in their devices. This inevitably eats into the battery of these devices, and lowers the battery life considerably.


Wireless networking - which is often just known as Wi-Fi - is a way of getting broadband internet without wires. Wi-Fi allows you to connect several computers at once, anywhere in the house - or if you have a laptop, to even use your computer in the garden. You don’t need to install extra phone lines or cables. Wi-Fi creates a network in your home or office – a little zone where computers can get broadband internet. It uses radio waves, just like TV or mobile phones. You may sometimes hear this zone referred to as a WLAN (Wireless Local Area Network).