Motorola WT4070 R, S

RAM. Random Access Memory. Data in RAM can be accessed in random order, and quickly written a nd read.

Resolution. The narrowest element dimension which is distinguished by a particular reading device or printed

with a particular device or method.

RF. Radio Frequency.

ROM. Read-Only Memory. Data stored in ROM cannot be changed or removed.

Router. A device that connects networks and supports the required protocols for packet filtering. Routers are

typically used to extend the range of cabling and to organize the topology of a network into subnets. See

Subnet.

RS-232. An Electronic Industries Association (EIA) standard that defines the connector, connector pins, and

signals used to transfer data serially from one device to another.

Scan Area. Area intended to contain a symbol.

Scanner. An electronic device used to scan bar code symbols and produce a digitized pattern that corresponds

to the bars and spaces of the symbol. Its three main components are:

1. Light source (laser or photoelectric cell) - illuminates a bar code.

2. Photodetector - registers the difference in reflected light (more light reflected from spaces).

3. Signal conditioning circuit - transforms optical detector output into a digitized bar pattern.

SDK. Software Development Kit

Secure Sockets Layer (SSL). SSL is a commonly-used protocol for managing the security of a message

transmission on the Internet. SSL uses a program layer located between the Internet's Hypertext Transfer

Protocol (HTTP) and Transport Control Protocol (TCP) layers. SSL is included as part of both the Microsoft

and Netscape browsers and most Web server products. Developed by Netscape, SSL also gained the

support of Microsoft and other Internet client/server developers as well and became the de facto standard

until evolving into Transport Layer Security. The “sockets” part of the term refers to the sockets method of

passing data back and forth between a client and a server program in a network or between program layers

in the same computer. SSL uses the public-and-private key encryption system from RSA, which also

includes the use of a digital certificate.

Shared Key. Shared Key authentication is an algorithm where both the AP and the MU share an authentication

key.

SID. System Identification code. An identifier issued by the FCC for each market. It is also broa dcast by the

cellular carriers to allow cellular devices to distinguish between the home and roaming service.

SMDK. Symbol Mobility Developer’s Kit.

Soft Reset. See Warm Boot.