1.1 System Architecture (2)

1.1 System Architecture (2)

1. I/O contollers

   • Used to allow an interface between a hardware device external to the motherboard and the processor itself
   • I/O controllers are used for keyboard, mouse, disk drive and VDU
     • VDU= Visual Display Unit

2. system buses

   • A bus is an set of parallel wires connecting two or more independent components of a computer system in order
   • The system is split into separate buses

3. Peripherals

   • Any devices that are not directly connected to the CPU
     • E.g. Mouse, keyboard, printer, hard disk drive, Cd-ROM drive
   • I/O parts
     • communication from an I/O device and the motherboard

4. Secondary storage

   • Used for long term storage of data and instructions
     • Hard disk drive
     • Solid disk drive
     • Flash-memory
     • DVD-R
     • Blu-ray
     • CD
     • Usb memory disk drive