Motorola MC3190 User's Guide download pdf (Page 175)

Glossary - 5

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.

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.

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.

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.

LAN. Local area network. A radio network that supports data communication within a local area, such as within a warehouse

of building.

laser scanner. A type of bar code reader that uses a beam of laser light.

LASER. Light Amplification by Stimulated Emission of Radiation.The laser is an intense light source. Light from a laser is

all the same frequency, unlike the output of an incandescent bulb. Laser light is typically coherent and has a high energy

density.

Laser Diode. A gallium-arsenide semiconductor type of laser connected to a power source to generate a laser beam. This

laser type is a compact source of coherent light.

LED Indicator. A semiconductor diode (LED - Light Emitting Diode) used as an indicator, often in digital displays. The

semiconductor uses applied voltage to produce light of a certain frequency determined by the semiconductor's particular

chemical composition.

MC. Mobile Computer.

MIL. 1 mil = 1 thousandth of an inch.

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Motorola MC3190 User's Guide Page 175