BUSES

BUSES

             In computer architecture, a bus is a “subsystem that transfers data between computer components inside a computer” or between computers. Each bus defines its set of connectors to physically plug devices, cards or cables together.

      Data bus- The channel, which carries data between the processor and other device in both directions.

      Address bus- The channel, which carries the address indicating form/to where date should be read/written. (Mainly work between CPU&RAM)

      Control bus- The channel, which carries the control single form the CPU to other devices. (Control- check the status of the device whether 1or 0)

Ø   Discuss: Bus speed

Serial & Parallel Data Transmission

            

              Serial: Term used to describe the process of transmitting information one bit at a time, or sequentially.

               Parallel: Action that is performed at the same time as another. For example, a communication that sends multiple bits of data each second.

INTERNAL BUSES

Term used to describe a device that is installed within the computer

EXTERNAL BUSES

 Also known as an”input/output bus” or “0/1 bus,” it is the “data pathway that connects peripheral devices to the CPU”.

  ISA (Industry Standard Architecture): This bus is the 16-bit ISA slot low speed work horse of the system. You will commonly fine a sound card hooked up this type BUS.

PIC (Peripheral Component Interconnect): Support 32-64 bit bus and is  the reigning standard of external buses. The PIC is fast and is slowly marking the ISA fade away. Go with a PIC Bus Card when possible

 IDE (Intelligent Drives Electronics): This bus is used mostly for disk drives and connects up to two devices on one connection. More than likely you’re hard drive and CD-ROM are connected through this type bus.

 AGP (Accelerated Graphics Port): This bus provides form 2 to 4 times the speed of the PIC and is used for video expansion only. If you have this slot on your motherboard make sure and use it for you video card. This is great way to go and takes a lot of stress off the CPU, thus gaining in performance all the way around.