English

Controller

Advertisements

Topics

  • Disk controller
  • Direct Memory Access (DMA)

Controller

A controller manages data transfer between a computer and peripheral devices. In PCs, controllers are often single chips included for standard components like the display, keyboard, and disk drives. Controllers must match the computer's bus architecture, such as AT, PCI, or SCSI, to function correctly. 

Disk controller 

A disk controller chip and its associated circuitry manage a disk drive. Different interfaces require specific controllers, such as an IDE controller for an IDE interface and a SCSI controller for a SCSI interface. In Macintosh systems, the disk controller is built into the motherboard. A hard disk controller (HDC) manages hard drives, while a floppy disk controller (FDC) manages floppy disks. 

Direct Memory Access (DMA) 

Direct Memory Access (DMA) improves data transfer speed between the processor and external devices. Instead of routing data through the processor, which is slow, a DMA controller handles the transfer directly between memory and the device, bypassing the processor and speeding up the process. 

If you would like to contribute notes or other learning material, please submit them using the button below.
Advertisements
Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×