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Glossary
A_B_C_D_E_F_G_H_I_J_K_L_M_N_O_P_Q_R_S_T_U_V_W_X_Y_Z.
| Term |
Description |
UPS |
Uninterruptible
Power Supply. A UPS is basically a battery back-up system
for your computer. It acts as a surge suppressor, filtering
line noise and providing protection against spikes. But, in
the event of a power outage it keeps your computer up and
running, sounding an alarm and allowing you to close any running
programs and shut down your computer safely. |
URL |
Universal
Resource Locater. Simply, the address to a website on the
Internet. To help better explain the parts, lets look at /glossaryu.htm.
The 'http://' tells you the document type (it uses the HTTP
protocol). Next, 'www' tells you it's on the World Wide Web
and 'pccomputernotes' is the domain name (the name of the
computer where the document is stored). The '.com' tells you
the type of domain (commercial, in this case), and the 'glossaryu.htm'
is the name of the document. If you don't see a document name
(eg. ) then it displays the default document for that domain,
usually 'default.htm' or 'index.htm'. |
UltraDMA/UltraATA |
Also
known as ATA/33, this is a technology in newer IDE hard drives
that allows for greater overall throughput. ATA/66 is now
available with many hard drives which is even faster. However,
a 7200 rpm ATA/33 drive will generally be faster than a 5400
rpm ATA/66 drive. That is, the speed of the drive itself is
much more important than the ATA/33 or 66 rating. |
User
Profile |
A
file kept in the Registry that contains a user's desktop settings
and personal setup preferences to be retained from session
to session.
|
USB |
A
Universal Serial Bus is an external bus with a maximum transfer
speed of 12 megabits per second. It's hot-swappable, which
means that a device can be connected or disconnected while
the computer is running. The Operating System can recognise
and use the device as soon as its plugged in. Up to 127 devices
can be daisy-chained together. |
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