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CIARA Astro PB60S
- 65 -
Jumper
-- On a printed circuit board, a patch connector, wire, or cable used to establish a circuit.
LCD
-- A liquid crystal display (LCD) is a thin, flat electronic visual display that uses the light modulating properties of liquid crystals
(LCs). LCs do not emit light directly. As LCD panels produce no light of their own, they require an external lighting mechanism to be
easily visible. On most displays, this consists of a cold cathode fluorescent lamp that is situated behind the LCD panel. Passive-matrix
displays are usually not backlit, but active-matrix displays almost always are. Recently, two types of LED backlit LCD displays have
appeared in some screens as an alternative to conventional backlit LCDs. In one scheme, the LEDs are used to backlight the entire
LCD panel. In another scheme, a set of red, green and blue LEDs is used to illuminate a small cluster of pixels, which can improve
contrast and black level in some situations. For example, the LEDs in one section of the screen can be dimmed to produce a dark
section of the image while the LEDs in another section are kept bright. Both schemes also allows for a slimmer panel than on
conventional displays.
LED
-- A light-emitting diode is a semiconductor light source. LEDs are used as indicator lamps in many devices, and are increasingly
used for lighting.
M.2
--
M.2 (pronounced
M dot two
), formerly known as the Next Generation Form Factor (NGFF), is a specification for internally
mounted computer expansion cards and associated connectors. It replaces the mSATA standard, which uses the PCI Express Mini
Card physical card layout and connectors. M.2's more flexible physical specification allows different module widths and lengths, and,
paired with the availability of more advanced interfacing features, makes the M.2 more suitable than mSATA for solid-state storage
applications in general and particularly for the use in small devices such as ultrabooks or tablets.
Megahertz (MHz)
-- A frequency of 1 million cycles per second.
Memory
-- Semiconductor chips used to hold information and programs while they are being accessed by the microprocessor. See
also RAM and ROM.
Microprocessor
-- An integrated circuit that contains the circuits the computer needs to calculate and to communicate with the
other parts of the system. See also central processing unit.
Multi-frequency monitor
-- A monitor (also known by the trade names MultiSync or MultiScan) that, due to its ability to scan at
various horizontal and vertical frequencies, is capable of displaying a wide variety of resolution modes.
Parity bit
-- An additional non-informational bit appended to a group of bits to make the number of ones in the group of bits either
an odd or even number ; an elementary mechanism for error checking.
Peripheral
-- A hardware device (such as a keyboard, monitor, or printer) that connects to a computer.
Pin
-- Any of the leads on a device, such as a chip, that plug into a socket and connect it to a system.
Pixel
-- Short for "picture element", the smallest single dot displayable on the display.
Power-On Self Test (POST)
-- Internal test procedures that the BIOS runs automatically when the system is turned on. These
procedures verify that the entire computer's hardware is functioning properly. If the test detects problems, the computer displays
error codes before (or instead of) starting the operating system. The error codes can help a service person determine what is wrong
with your computer.
RAM
-- An acronym for "random-access memory." The type of computer memory used to store information while a program is
running. All data stored in RAM is lost when the computer is turned off or power is lost.
Refresh
-- Periodic rewrite of system memory contents to the same memory locations by the microprocessor so that the contents
do not decay beyond redemption.
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