Glossary - 9
U
UDP.
User Datagram Protocol. A protocol within the IP protocol suite that is used in place of TCP when a reliable delivery
is not required. For example, UDP is used for real-time audio and video traffic where lost packets are simply ignored,
because there is no time to retransmit. If UDP is used and a reliable delivery is required, packet sequence checking and
error notification must be written into the applications.
UPC.
Universal Product Code. A relatively complex numeric symbology. Each character consists of two bars and two
spaces, each of which is any of four widths. The standard symbology for retail food packages in the United States.
V
Visible Laser Diode (VLD).
A solid state device which produces visible laser light.
W
Warm Boot.
A warm boot restarts the mobile computer by closing all running programs. All data that is not saved to flash
memory is lost.
Summary of Contents for MC75A
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