Operating instructions

68 MIKE MEYERS’ A+ CERTIFICATION PASSPORT
Passport / Mike Meyers‘ A+ Certification Passport / Meyers / 226308-3 / Glossary
transfer corona A thin wire, usually protected by other thin wires, that ap
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plies a positive charge to the paper during the laser printing process, drawing
the negatively charged toner particles off of the drum and onto the paper.
triad A group of three phosphors—red, green, blue—in a CRT.
TWAIN (technology without an interesting name) A programming interface
that enables a graphics application, such as a desktop publishing program, to ac
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tivate a scanner, frame grabber, or other image-capturing device.
UAC (User Account Control) A feature in Windows Vista that enables Stan
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dard accounts to do common tasks and provides a permissions dialog when
Standard and Administrator accounts do certain things that could potentially
harm the computer (such as attempt to install a program).
UART (universal asynchronous receiver/transmitter) A UART is a device that
turns serial data into parallel data. The cornerstone of serial ports and modems.
UDP (User Datagram Protocol) Part of the TCP/IP protocol suite, UDP is an
alternative to TCP. UDP is a connectionless protocol.
ultra DMA A hard drive technology that enables drives to use direct memory
addressing. Ultra DMA mode 3 drives—called ATA/33—have data transfer
speeds up to 33 MBps. Mode 4 and 5 drives—called ATA/66 and ATA/100, re-
spectively—transfer data at up to 66 MBps for mode 4 and 100 MBps for mode
5. Both modes 4 and 5 require an 80-wire cable and a compatible controller in
order to achieve these data transfer rates.
unattended install A method to install Windows without user interaction.
unintentional install An installation of a USB device before installing the
drivers, creating a nightmare of uninstalling and reinstalling software.
UNIX A popular computer software operating system developed by and for
programmers at Bell Labs in the early 1970s, used on many Internet host sys
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tems because of its portability across different platforms.
Upgrade Advisor The first process that runs on the XP installation CD. It
examines your hardware and installed software (in the case of an upgrade) and
provides a list of devices and software that are known to have issues with XP. You
can also run the Upgrade Advisor as a standalone tool without going through
the install process.
P:\010Comp\Passport\308-3\gloss.vp
Monday, April 09, 2007 10:24:48 PM
Color profile: Generic CMYK printer profile
Composite Default screen