Transcript Keyboard
C.S.3 Input and Output Devices Input Devices Keyboard Magnetic Strip Card Reader Bar code reader read the bar codes(series of parallel vertical lines used to assign a unique identification code to an item) and the information is then transmitted to computer for processing An example of a bar code Bar code Reader Optical Character Reader MC Paper Magnetic Ink Character MICR character set - E13B MICR character set - CMC7 MICR Letter on Cheque Graphic Tablet Joystick Mouse Cordless wheel mouse Wheel mouse for notebooks 3-button mouse iMouse for iMac Light Pen A light pen Voice Input- Microphone transmit wave signal to computer Touch Screen to respond when a position of the screen is touched by the fingers of the user A touch screen kit solution Scanner Image Scan Edit to recognize different kinds of input devices mouse, keyboard, bar-code reader Text Image OCR Edit To recognize different kinds of input devices •mouse •keyboard •bar-code reader Smart Card Reader Two types of smart cards and their readers ViewCam capture video signal and put it directly into PC for editing can be used for video-conferencing Digital Camera after taking pictures, the user can connect the camera directly to a home computer, stored on disks, or sent to friends via electronic mail Photo printer for digital camera Digital camera Memory card for digital camera Quiz 1.What kind of input device should be chosen to manage the stock in the supermarket ? A. Mouse B. Point of Sale Terminal C. OMR Reader D. Monitor 2.Mr. Wong wants to edit a photo using his computer. What input device should he choose ? A. Keyboard B. Image Editing Software C. Image Scanner D. Mouse 3.What is the standard input device in a computer system ? A. Mouse B. Keyboard C. Monitor D. Joystick 4.What kind of input device should be used in Video Conferencing ? A. WebCam B. Point of Sale Terminal C. Digital ViewCam D. None of the above 5.Which of the following is used to recognize characters in cheque ? A. OCR reader B. OMR reader C. MCR reader D. MICR reader Output Devices Visual Display Unit Visual Display Unit Visual Display Unit Visual Display Unit Sound Synthesizer Graphic Plotter Larger size of printout Dot Matrix Printer Dot Matrix Printer character formation Ink Jet Printer Laser Printer Simplified mechanism of laser printer End