Zebra MC55A0 Guía de usuario descargar pdf (Pagina 175)

Glossary - 5

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

LCD. See Liquid Crystal Display.

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.

Light Emitting Diode. See LED.

Liquid Crystal Display (LCD). A display that uses liquid crystal sealed between two glass plates. The crystals are

excited by precise electrical charges, causing them to reflect light outside according to their bias. They use little

electricity and react relatively quickly. They require external light to reflect their information to the user.

MC. Mobile Computer.

MDN. Mobile Directory Number. The directory listing telephone number that is dialed (generally using POTS) to reach

a mobile unit. The MDN is usually associated with a MIN in a cellular telephone -- in the US and Canada, the MDN

and MIN are the same value for voice cellular users. International roaming considerations often result in the MDN

being different from the MIN.

MIN. Mobile Identification Number. The unique account number associated with a cellular device. It is broadcast by the

cellular device when accessing the cellular system.

Mobile Computer. In this text, mobile computer refers to the MC55. It can be set up to run as a stand-alone device, or

it can be set up to communicate with a network, using wireless radio technology.

Nominal. The exact (or ideal) intended value for a specified parameter. Tolerances are specified as positive and

negative deviations from this value.

NVM. Non-Volatile Memory.

Open System Authentication. Open System authentication is a null authentication algorithm.

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Zebra MC55A0 Guía de usuario Pagina 175