Samsung HABANA-C NT-R45 Series, Руководство по обслуживанию, Страница: 15 / 156

11-10
11. References
EPROM
Abbreviation for ‘Erasable Programmable Read Only Memory’. An EPROM differs from a PROM in
that a PROM can be written to only once and cannot be erased. IF an EPROM is exposed to
ultraviolet light, the data is erased.
An EPROM is covered by transparent glass and 30 minutes of exposure to ultraviolet light erases all
data. To prevent data loss by mistake, place an anti-ultraviolet sticker on the glass of the chip.
Flash Memory
Since flash memory can be written or deleted electrically, you can delete data by blocks and
reprogram the memory. Flash memory can continue to store information in the absence of a power
source, can allow tens of thousands of reading and writing operations, and is expected as the next
generation external storage device that can replace the floppy disk and magnetic disks. It has the
simple structure of a ‘1 bit per element’ and provides more circuit density in a unit area than RAM.
Firmware
This is software that has been written to the ROM or PROM. Firmware is a combination of software
and hardware. It is generally used to improve performance by updating the data saved on the BIOS
or ROM on the main board.
DAC
Abbreviation for ‘Digital Analog Converter’. DAC converts a digital signal into analog.
WAN (Wide Area Network)
This stands for wide area network. A computer network that spans a wider area than does a local
area network (LAN).
Bluetooth
A global initiative set up in May 1998 by Ericsson (Sweden), IBM and Intel (U.S.) and Nokia
(Finland) to define a standard for cable-free connectivity between mobile phones, mobile PCs, PDAs
and other peripherals for easier use of devices at home and the office. Bluetooth uses short-range
radio links in the 2.4 GHz Instrumentation Scientific and Medical (ISM) band based on IEEE 802.11
specifications.
AGP (Accelerated Graphics Port)
A graphic interface specification developed by Intel. AGP is designed especially for the throughput
demands of 3-D graphics. Rather than using the PCI bus for graphics data, AGP introduces a
dedicated point-to-point channel so that the graphics controller can directly access the main memory.
While the PCI bus operates at 33MHz, AGP operates at 60
∼ 133MHz and provides a much higher
throughput for 3-D graphics.
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