Input Devices : Pointing Mouse : mechanical, light Touch Pad : finger pressure Track Ball : upside down mouse Pointing Stick : TrackPoint, Isopoint Joystick.

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Presentation transcript:

Input Devices : Pointing Mouse : mechanical, light Touch Pad : finger pressure Track Ball : upside down mouse Pointing Stick : TrackPoint, Isopoint Joystick : and other gaming devices Tablet & Stylus Touch Screen

Input Devices : Reading Optical Mark Readers Bar Code Readers Magnetic Ink Character Readers RFID Tags & Readers

Input Devices : Reading Optical Character Recognition Handwriting recognition Smart Whiteboard

Input Devices : Digitizing Scanner Digital Camera Video Digitizer Digital Video Camera

Output : Monitor most familiar (VDT) diagonally in inches pixels, dpi, resolution colour depth : number of colours that can be displayed at one time video adaptor / video card VRAM

Output : Monitor Liquid Crystal Display Cathode Ray Tube

Output : Printers impact & non-impact dot matrix printers & line printers laser & ink jet & thermal resolution plotter multi-function devices..

Colours light & pigment are different Pigment : cyan, magenta, yellow & black Light : red, green, blue

Sound Output sound card – accept a microphone, play sound through speakers & headphones. all Macs & most PCs have on board sound. synthesized speech, music, & sounds.

Fax Machines / Fax Modems phone lines dots to create the image

Combined Devices some devices do both I/O. peripherals interface with the world.

Storage Secondary storage / memory magnetic, optical, solid state

Storage magnetic tapes magnetic disks hard disks optical disks solid state devices

Ports, Slots, Buses & Bays port : connect a device. Slot : place to insert a special piece of hardware. Bus : group of wires connecting bays, ports and slots to the CPU. Bay : open space in the box for a storage device.

Standard Ports serial port : one bit at a time, modem parallel Port : groups of bits, printer keyboard / mouse ports USB ports faster, generic, multiple devices, various standards

Special Ports on expansion cards video port for the monitor microphone, speaker, MIDI for attaching sound equipment network card adds a port to connect to the LAN

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