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A disk controller allows a disk to talk to the same bus. Signals read by a disk read-and-write head are converted by a disk controller, then transmitted over the peripheral bus, then converted again by the host adapter into the suitable format for the motherboard's bus, and then read by the CPU into the memory (RAM).
A disk array controller provides front-end interfaces and back-end interfaces. The back-end interface communicates with the controlled disks. Hence, its protocol is usually ATA (a.k.a. PATA), SATA, SCSI, FC or SAS. The front-end interface communicates with a computer's host adapter (HBA, Host Bus Adapter) and uses:
A typical desktop computer has its microprocessor, main memory, and other essential components connected to the motherboard. Other components such as external storage , controllers for video display and sound , and peripheral devices may be attached to the motherboard as plug-in cards or via cables; in modern microcomputers, it is increasingly ...
In computing, an expansion card (also called an expansion board, adapter card, peripheral card or accessory card) is a printed circuit board that can be inserted into an electrical connector, or expansion slot (also referred to as a bus slot) on a computer's motherboard (see also backplane) to add functionality to a computer system. Sometimes ...
card reader Any data input device that reads data from a card-shaped storage medium such as a memory card. [1] [2] [3] channel I/O A generic term that refers to a high-performance input/output (I/O) architecture that is implemented in various forms on a number of computer architectures, especially on mainframe computers. chipset. Also chip set.
It incorporates an SD card reader, Ethernet, VGA output, and 64 MB RAM. An FPGA-based TMS9918 compatible graphics chip, called the F18A, is a drop-in replacement for the original 9918 VDP, but features VGA output, bypassing the TMS9918A's native composite output, and contains other enhancements such as removal of the restriction of 4 sprites ...
Typically a hard disk drive (HDD) installs into a drive bay; cables connect the drive to a host adapter and power source. If the personal computer lacks an available bus on a compatible host adapter, then one may have to install an adapter into an expansion slot. The Hardcard supplies its own host adapter, and doesn't require an empty drive bay.
An adapter card or expansion card is a circuit board which is plugged into the expansion bus in a computer to add function or resources, in much the same way as a host bus adapter (see above). [ 3 ] [ 1 ] Common adapter cards include video cards , network cards , sound cards , and other I/O cards.