Unit Two - Input And Output Devices

Unit Two - Input And Output Devices

1. Analogue And Digital Data

   • Computer process data using O's and 1's binary.
   • Modern input devices use digital data but some systems are based on analogue systems and require converting.
   • E.g light and heat sensors
   • An ADC (analogue to digital converter) will be used to convert data (into binary) in order for a computer to process the data

2. Input Devices

   • Microphone
   • Magnetic Ink Character Reader (MICR)
   • Numeric Pad
   • Joystick
   • Mouse
   • Touchscreen
   • Touch Pad
   • Tracker Ball
   • Chip Reader
   • Pin Pad
   • Scanner
   • Light Sensor
   • Digital Camera
   • Temperature Sensor
   • Graphics Tablet
   • Optical Mark Reader (CMR)
   • Optical Character Reader (OCR)
   • Barcode Reader
   • Webcam
   • Video Camera
   • Light Pen

3. Output Devices

   • Speakers
   • TFT Monitor
   • CRT Monitor
   • Multimedia Projecter
   • Inkjet Printer
   • Dot Matrix Printer
   • Laser Printer
   • Graph Plotter