Symbol-technologies MC70 User Manual download pdf (Page 149)

Glossary - 5

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.

Input/Output Ports. I/O ports are primarily dedicated to passing information into or out of the terminal’s memory. Series

9000 mobile computers include Serial and USB ports.

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.

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.

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.

IP. Internet Protocol. The IP part of the TCP/IP communications protocol. IP implements the network layer (layer 3) of

the protocol, which contains a network address and is used to route a message to a different network or subnetwork.

IP accepts “packets” from the layer 4 transport protocol (TCP or UDP), adds its own header to it and delivers a

“datagram” to the layer 2 data link protocol. It may also break the packet into fragments to support the maximum

transmission unit (MTU) of the network.

IP Address. (Internet Protocol address) The address of a computer attached to an IP network. Every client and server

station must have a unique IP address. A 32-bit address used by a computer on a IP network. Client workstations

have either a permanent address or one that is dynamically assigned to them each session. IP addresses are written

as four sets of numbers separated by periods; for example, 204.171.64.2.

IPX/SPX. Internet Package Exchange/Sequential Packet Exchange. A communications protocol for Novell. IPX is

Novell’s Layer 3 protocol, similar to XNS and IP, and used in NetWare networks. SPX is Novell's version of the Xerox

SPP protocol.

IS-95. Interim Standard 95. The EIA/TIA standard that governs the operation of CDMA cellular service. Versions include

IS-95A and IS-95B. See CDMA.

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Symbol-technologies MC70 User Manual Page 149