Amethyst
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379380381382383384385386387388389390391392393394395396397398399PDA
=> (Personal Digital Assistant) PDAs are basically beefed-up organizers. They have small LCD screens, some form of pen or keyboard input, and software
for
organization, OCR, and contact management. Some have even more features, such as Web browsi...
Peripherals
=> Any device that is not part of the motherboard, aside from memory and the CPU. For example, video card, sound card, modem, hard drive.
Perspective
Correction
=> This correctly alters the textures in a scene to give a sense that all the images on the screen converge on one central point way out in the distance. It's why things far away look smaller.
Petabyte
=> One thousand terabytes / one million gigabytes / one billion megabytes / one trillion kilobytes / one quadrillion bytes (approximately)
PGA
=> (Pin Grid Array) This is a form of chip
with
a group of pins in concentric rectangles, designed to fit into a PGA slot. Most x86 compatible chips are designed in this
format
.
PGA
slot
=> This slot accepts a PGA chip. See PGA.
Pincushioning
=> This is one form of image distortion on a monitor. Good monitors have controls to deal
with
this problem. Basically, the top and bottom of the screen are wider than the middle (convex), or vice versa (concave). When corrected properl...
PING
=> see Packet InterNet Gopher.
PIO
=> See Programmed Input/Output.
Pipeburst
Cache
=> See Pipeline Burst Cache. This is an abbreviation, or contraction,
for
it, just like
"ain't"
is an abbreviation
for
"am not."
Pipeline
=> This refers to the technique of processing multiple parts of an instruction at the same
time
. Many processers have two or more instruction pipelines. Think of it as an automobile assembly line. As one instruction is executed, the
next
ins...
Pipeline Burst
Cache
=> This is a form of L2 cache that uses pipelining to speed data access by being able to feed data to the CPU at the same
time
it pulls data from memory. The burst mode also allows the cache to fetch additional data from main mem...
Pixel
=> The smallest dot that a computer can display at a particular resolution. Screen size is often referred to in pixels: 800 x 600,
for
example. This means that the screen is 800 pixels across and 600 pixels vertically.
Platform
=> This is a means of generically grouping like computers. Macintosh computers are a platform; so are PCs running DOS. It's not very specific, and multi-platform support can mean many things. If someone says to you "this application supports...
PNP
=> (Plug and Play) This is a standard that was supposed to make adding peripherals to your
system
as easy as plugging them in and using them. Its biggest contribution, aside from headaches, is the removal of jumpers from many devices.
Point to Point Tunneling
Protocol
=> (PPTP) This is a remote access protocol that allows people to make a connection to easily
connect
to their
local
network through the Internet or some other large network. Conversations are kept private through enc...
POP
=> (Point Of Presence) This is a
local
telephone number through which you can access your ISP. The largest national ISPs have POPs all over the country.
Port
=> To port something, you translate the code
for
a program from one platform to another. You could port a program you wrote on a PC over to a Macintosh,
for
example. Port
Portable
Computer
=> Technically, any computer that is self-contained to allow easy moving. Most often refers to a computer that can work away from an outlet.
Power
Supply
=> A device attached to the case that converts 120 AC to DC at voltages that a computer needs to run. They come rated by wattage.
PPP
=> (Point to Point Protocol) The mode of transport used to
connect
a computer to the Internet via a dial-up adapter (a/k/a a modem).
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