gradual on each side of the focused distance, so that within the DOF, the
unsharpness is imperceptible under normal viewing conditions.
EDGE
Enhanced Data rates for GSM Evolution (EDGE) is a backward-compatible
digital mobile phone technology that allows improved data transmission rates,
as an extension on top of standard GSM. EDGE is considered a 3G radio
technology and is part of ITU's 3G definition.
EEPROM
Electrically Erasable Programmable Read-Only memory. An on-board non-
volatile memory chip.
Ethernet
The standard local area network (LAN) access method. A reference to "LAN,"
"LAN connection" or "network card" automatically implies Ethernet. Defined by
the IEEE as the 802.3 standard, Ethernet is used to connect computers in a
company or home network as well as to connect a single computer to a cable
modem or DSL modem for Internet access.
Firmware
Firmware is a software program or set of instructions programmed on a
hardware device. It provides the necessary instructions for how the device
communicates with the other computer hardware. Firmware is typically stored in
the flash ROM of a hardware device. While ROM is "read-only memory," flash
ROM can be erased and rewritten because it is actually a type of flash memory.
Flash Disk
Non-volatile memory for storing application and configuration files.
GSM
Global System for Mobile communication. It is a standard for digital cellular
communications, currently used in the 900 MHz and 1800 MHz bands.
Host
A computer that serves other mobile computers in a network, providing services
such as network control, database access, special programs, supervisory
programs, or programming languages.
WLAN
A Wireless Local Area Network links devices via a wireless distribution method
(typically spread-spectrum or OFDM radio), and usually provides a connection
through an access point to the wider internet. This gives users the mobility to
move around within a local coverage area and still be connected to the network.
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