*ROM(read-only memory)
    >Information stored permanently on a chip
    >Contains startup instructions and other permanent data

*CMOS(complementary metal oxide semi conductor)
    >Special low-energy kind of RAM

*Flash Memory
    >Used for phones, pagers, portable computers hand-held computers, and PDAs


*Buses, Ports and, Peripherals
    >Information travels betweem components on the motherboard through groups of wires called       system buses or just buses

    >Buses
          -Typically have 32 or 64 wires
          -Connect to storage devices in bays
          -Connect to expansion slots
          -Connect to external buses and ports
    >Slots and Ports
          -Make it easy to add external devices called perpherals

*Inventing the Future
     >New Laser etching technology called e3xtreme ultraviolet lithography (EUVL) could reduce chip  size and increase performance radically.

     >Superconductors that trasmit electricity without heat could increase computer speed a hundred fold
    
     >The optical computer trasmits information in light waves rather than electrical pulses


Input from person to processor

     >Keyboard
           -The most familiar input device
           -Used to enter letters, numbers and special characters
     >Standard keyboard
     >Ergonomic keyboards
           -To address Medic
     >Wireless keyboard
     >Folding keyboards

Pointing Devices

ü Mouse

üTouchpad

üPointing stick

üTrackball

üJoystick

üGraphics tablet

üTouch screen

üStylus

 

Reading Tools