Ingenico IWL220 Technical Manual page 54

F
Flash: Non-volatile memory.
Frequency: A measure of the energy, as one or more waves per second, in an electrical or
light-wave information signal. A signal's frequency is stated in either cycles-per-second or
Hertz (Hz).
G
GSM: Global system for mobile communication, a world standard for digital wireless
transmissions. GSM is the most widely used standard in the world today with more than 150
million users worldwide.
I
ISDN: Integrated services digital network
ISO: International organization for standardization is a global network that identifies what
international standards are required by business, government and society, develops them
in partnership with the sectors that will put them to use, adopts the by transparent
procedures based on national input and delivers them to be implemented worldwide.
ISO-8583: International standard covering EFT messaging.
L
LAN: Local area network, a data communication network, typically within a building or
campus, to link computers and peripherals devices under some form of standard control.
LCD: Liquid crystal display.
LED: Light emitting diode.
LLT: Local loading tool
M
Modem: Modulator/DEModulator, a hardware device which converts digital data into
analog and vice versa to enable digital signals from computers to be transmitted over
analog telephones lines.
MSR: Magnetic stripe reader
O
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