IEEE 802.11
A set of standards carrying out wireless local area network (WLAN) computer
communication in the 2.4, 3.6 and 5 GHz frequency bands. They are created
and maintained by the IEEE LAN/MAN Standards Committee.
Liquid Crystal Display (LCD)
A display that uses liquid crystal sealed between two glass plates. The crystals
are excited by precise electrical charges, causing them to reflect light outside
according to their bias. They use little electricity and react relatively quickly.
They require external light to reflect their information to the user.
Light Emitting Diode (LED)
A low power electronic light source commonly used as an indicator light. It uses
less power than an incandescent light bulb but more than a Liquid Crystal
Display (LCD).
Null modem cable
RS-232 serial cable where the transmit and receive lines are crosslinked. In
some cables there are also handshake lines crosslinked. In many situations a
straight through serial cable is used, together with a null modem adapter. The
adapter contains the necessary crosslinks between the signals.
Pairing
A Bluetooth pairing occurs when two Bluetooth devices agree to communicate
with each other and establish a connection.
Piconet
A piconet is a Bluetooth PAN that links up to eight devices. Each piconet is
controlled by one master device, and up to seven slave devices at any one time.
Any device may be a member of more than one piconet, changing its
membership as a user moves from one area to another.
RAM
Random Access memory. Data in RAM can be accessed in random order, and
quickly written and read.
RF
Radio Frequency.
RTC
Real Time Clock.
TDMA
Time division multiple access (TDMA) is digital transmission technology that
allows a number of users to access a single radio-frequency (RF) channel
without interference by allocating unique time slots to each user within each
channel. The TDMA digital transmission scheme multiplexes three signals over
a single channel. The current TDMA standard for cellular divides a single
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