A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

LAN
Local area network - a network in a building or on a site usually used to connect computers together.

LCD
Liquid Crystal Display. A low-power monitor

LED
Light Emitting Diode. A semiconductor device that emits visible light when conducting current

LFE
Low Frequency Effects. Dolby Digital and DTS 5.1 soundtracks feature a dedicated bass channel (.1) specifically to cater for and process low frequency sounds and add emphasis and depth to soundtracks.

Li-Ion
Stands for Lithium Ion. Many digital cameras take a dedicated Li-ion rechargeable battery. They hold more power than other types of battery, and don't suffer from the 'memory effect', where a partially charged battery, when recharged, will only register the additional charge rather than its full capacity.

LNB
The Low Noise Block does several things: its horn focuses the reflected beam from the dish down onto a tiny aerial inside the LNB. In the modern "voltage switching" LNB there are two aerials - one for Horizontal and one for Vertical signals. The signals go right through the thin plastic rain cap on the horn and are received by the two aerials inside. These weak signals are amplified by an electronic amplifier. As these very high microwave frequencies are used the LNB then converts them into lower frequencies which will go down coax cable.

LW
Long Wave. A type of radio broadcasting.