Symbol MC9090G User Manual page 230

Glossary - 6 MC909X Mobile Computer User Guide
use simple mathematical calculations to broadcast information that is translated as longitude, latitude and altitude by
Earth-based receivers.
GPRS. (General Packet Radio Service) A technology that runs at speeds up to 115Kbit/sec., compared with the 9.6Kbit/sec.
of older GSM systems. It enables high-speed wireless Internet and other communications such as e-mail, games and
applications. It supports a wide range of bandwidths and is an efficient use of limited bandwidth. It's particularly suited
for sending and receiving small amounts of data, such as e-mail and Web browsing, as well as large volumes of data.
GSM. (Global System for Mobile Communications) A digital cellular system based on TDMA narrowband technology, which
gives users access to time slots on the same frequency bands. It allows up to eight simultaneous communications on
the same frequency.
H
Hard Reset. See Cold Boot.
Hz. Hertz; A unit of frequency equal to one cycle per second.
Host Computer. A computer that serves other terminals in a network, providing such services as computation, database
access, supervisory programs and network control.
I
IDE. Intelligent drive electronics. Refers to the solid-state hard drive type.
IEC. International Electrotechnical Commission. This international agency regulates laser safety by specifying various laser
operation classes based on power output during operation.
IEC (825) Class 1. This is the lowest power IEC laser classification. Conformity is ensured through a software restriction of
120 seconds of laser operation within any 1000 second window and an automatic laser shutdown if the scanner's
oscillating mirror fails.
IEEE Address. See MAC Address.
Interleaved 2 of 5. A binary bar code symbology representing character pairs in groups of five bars and five interleaved
spaces. Interleaving provides for greater information density. The location of wide elements (bar/spaces) within each
group determines which characters are encoded. This continuous code type uses no intercharacter spaces. Only
numeric (0 to 9) and START/STOP characters may be encoded.
IOCTL. Input/Output Control.
Intercharacter Gap. The space between two adjacent bar code characters in a discrete code.
Interleaved Bar Code. A bar code in which characters are paired together, using bars to represent the first character and
the intervening spaces to represent the second.
A binary bar code symbology representing character pairs in groups of five bars and five interleaved
Interleaved 2 of 5.
spaces. Interleaving provides for greater information density. The location of wide elements (bar/spaces) within each