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SCSI

View RSS feed Small Computer System Interface (SCSI, play /ˈskʌzi/ skuz-ee)  is a set of standards for physically connecting and transferring data between computers and peripheral devices. The SCSI standards define commands, protocols, and electrical and optical interfaces. SCSI is … Continue reading

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MOTHERBOARD

MOTHERBOARD Modern motherboards include, at a minimum: 1.  sockets (or slots) in which one or more microprocessors may be installed 2.  slots into which the system’s main memory is to be installed 3.  a chipset which forms an interface between … Continue reading

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FIREWIRE (IEEE 1394)

The IEEE 1394 interface is a serial bus interface standard for high-speed communications and isochronous real-time data transfer, frequently used by personal computers, as well as in digital audio, digital video, automotive, and aeronautics applications. The interface is also known … Continue reading

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RISER CARD

A riser card is a printed circuit board that picks up a multitude of signal lines (often bused) via a single connector (usually an edge connector) on a mainboard and distributes them via dedicated connectors on the card. There are … Continue reading

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DMA (DIRECT MEMORY ACCESS)

Direct memory access (DMA) is a feature of modern computers that allows certain hardware subsystems within the computer to access system memory independently of the central processing unit (CPU). Without DMA, when the CPU is using programmed input/output, it is … Continue reading

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I/O ADDRESSES

Memory-mapped I/O (not to be confused with memory-mapped file I/O) uses the same address bus to address both memory and I/O devices ‒ the memory and registers of the I/O devices are mapped to (associated with) address values. So when … Continue reading

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