1. .. .4.6 2 .. .4.6 3 .. .4.6 6 .4.6 26 .4.6 33 .4.6 10 .4.6 14 .4.6 25 .4.6 48 .4.6 41

2. (Input Unit) (Input Unit) 3. (Keyed Device) (Keyed Device) (Keyboard) 4 - (Character Keys) - (Control Keys) - (Function Keys) - (Numeric Keys) 4. (Pointing Device) (Pointing Device) (Mouse) (Track ball) (Track Point) (Touch Pad) (Joy stick) 5. (Touch Screen) (touchscreen) 6. (Pen-Based System) (Light pen) (CAD Computer Aided Design ) PDA 7. (Digitizing tablet) (Grid) stylus CAD 8. (Data Scanning Device) 9. (Magnetic Character Recognition - MIRC) MIRC MIRC MIRC MIRC 10. (Bar Code Reader) .. 1970 11. (Scanner) 12. (Handheld Scanner) 13. - (Sheetfed Scanner) 14. - (Flatbed Scanner) 15. (Optical Character Recognition - OCR) ( ) 16. (Optical Mark Reader - OMR) 2B 17. (Digital Camera) CCD 18. (Digital vedio) 10 - 15 19. (Voice Recognition Device) (Speech Recognition Device) 20. http://www.oocities.org/webcom131 http://www.thaigoodview.com/library/contest2552/type 1/tech03/18/prakopinput.html https://www.google.co.th/ 21.