Glossary - 6 MC50 with Windows Mobile 5.0 User Guide

H
Hard Reset. See Cold Boot.
Hopping Sequence. A set of random frequencies designed to minimize interference with other sets of random
frequencies. A hopping sequence determines the pattern with which a station that uses frequency hopping
changes its communications frequency. See Frequency Hopping.
Host Computer. A computer that serves other computers in a network, providing such services as computation,
database access, supervisory programs and network control.
Hz. Hertz; A unit of frequency equal to one cycle per second.
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.
Imaging Scanning. Mobile computers with an integrated imager use digital camera technology to take a digital
picture of a bar code, store the resulting image in memory and execute state-of-the-art software decoding
algorithms to extract the data from the image.
Input/Output Ports. I/O ports are primarily dedicated to passing information into or out of the mobile
computer’s memory. Series 9000 mobile computers include Serial and USB ports.
Intercharacter Gap. The space between two adjacent bar code characters in a discrete code.
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 ch aracters are encoded. This continuous code type
uses no intercharacter spaces. Only numeric (0 to 9) and START/ STOP characters may be encoded.
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.
Internet Protocol Address. See IP.
IOCTL. Input/Output Control.
I/O Ports. interface The connection between two devices, defined by common physical characteristics, signal
characteristics, and signal meanings. Types of interfaces include RS-232 and PCMCIA.