PC CONTROLLER DEVICES
Any device on a computer will have a "controller" device, whether it is
on the motherboard, or inserted into an expansion slot in the form of
a PC card. Many PCs have the controllers built into the mother board
for devices such as IDE disk controller, printers, etc. An electrical
cable (usually a parallel(ribbon) cable) attaches the hardware devices to
the controller.
- Integrated Drive Electronics (IDE) Controllers
- Small Computer System Interface (SCSI) Controllers
- Enhanced IDE Controllers
The type of controllers listed above primarily control the interface of
storage devices to the motherboard's bus such as an ISA, EISA, or even a
PCI bus. There are other types of controllers on chips in the computer that
you may not even know about or be able to see. For example 'memory controller',
VL Bus controller, PCI bus controller. Some "expansion" cards even act
in a 'controller' function and perform other functions as well.etc. An
example is a video adapter card, or a video accelerator card.
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