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SPD is a small ROM or
device resided on the
. SPD stores memory module information such as DRAM
timing and chip parameters. SPD can be used by
to decide best timing for this DIMM or RIMM.
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ately, Ultra DMA/33) is a protocol for transferring data between a hard disk drive through the
a
bus) to the compu er’s random access memory (RAM). The Ultra DMA/3 protocol transfers data in
Ultra DMA (or, more accur
computer’s dat path (or
t
3
burst mode at a rate of 33.3MB/s, twice as fast as the previous
interface. Ultra DMA was
developed as a proposed industry standard by the Quantum corporation, makes of hard disk drives, and Intel, makes of chipset
hat support computer bus technology. Ultra DMA support in your computer means that it will boot (start) and open new
i e and applications that require large amounts of access to data on
cking (CRC), offering a new level of data protection. Ultra DMA
t
applications more quickly. It will help users of graphic-intens v
the hard disk drive. Ultra DMA uses Cyclical Redundancy Che
uses the same 40-pin IDE interface cable as PIO and DMA.
16.6MB/s x2 = 33MB/s
16.6MB/s x4 = 66MB/s
16.6MB/s x6 = 100MB/s
(less than 10Mbit/s, but the
ewly designed USB2.0 has a fancy speed of up to 400Mbps) such as keyboard, mouse, joystick, scanner, printer and modem.
With USB, the traditional complex cables from back panel of your PC can be eliminated.
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USB is a 4-pin serial peripheral bus that is capable of cascading low/medium speed peripherals
n
