Topic - A Typical Computer System Form 4 Computer Studies Input Devices

EDD5161R Group8 members : Kwok Ming Ying Anita ( ) Koo Chi Kit ( ) Wong Yuk Wa ( ) Law Ngai Tat Andrew ( ) Collect text used in presentation Integrate all materials to Powerpoint slides Collect all images used in presentation Add sound, animation and special effects

Target Audience : Class - Form 4 science students Age/Grade - 15/Band 1 Prior knowledge: Basic knowledge & experience in using mouse and keyboard Other Materials : Some concrete objects of input devices for demonstration Purpose : Lecturing

Input Device - a piece of hardware that is used for providing information to the computer Examples are...

Mouse  common pointing device used with a computer  flat bottom with one or more buttons on the top and a multidirectional detection device (usually a ball) on the bottom  controls by moving and clicking the mouse

Different Type of Mice Cordless wheel mouse3-button mouse Wheel mouse for notebooks iMouse for iMac

Mouse Interface Serial PS2 USB

Trackball  basically an inverted mouse  the user rotates the ball itself while clicking nearby buttons

Joystick and Gamepad  a popular pointing device, used mostly for playing computer games

Keyboard  a keypad device with buttons or keys that a user presses to enter data characters and commands into a computer Function key Numeric keypad

Different Type of Keyboard 104-key keyboard Natural keyboard Keyboard for the Mac

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 Digital camera Photo printer for digital camera Memory card for digital camera

Pen Input  allow users to input Chinese without using the tradition Chinese input method Smart pen

Light Pen  allow users to point at the graphics on the display to select functions or to locate desired positions

Touch Screen  to respond when a position of the screen is touched by the fingers of the user A touch screen kit solution

Microphone  transmit wave signal to computer

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

OMR reader  the Opitical Mark Recognition technique can read pencil marks registered in specified position on a form

MICR reader  use Magnetic Ink Character Recognition technique  magnetizing the magnetic ink characters on documents and sensing the signal induce by each character as it passes a reading head  it can only read standard MICR characters  can process 2000 cheques per minute

Magnetic Ink Character MICR character set - E13B MICR character set - CMC7

Scanner Image Scan Edit

to recognize different kinds of input devices mouse, keyboard, bar-code reader Text Image OCR To recognize different kinds of input devices mouse keyboard bar-code reader Edit

Quiz

1.What kind of input device should be chosen to manage the stock in the supermarket ? B.Point of Sale Terminal A.Mouse C.OMR Reader D.Monitor B.Point of Sale Terminal

2.Mr. Wong wants to edit a photo using his computer. What input device should he choose ? B.Image Editing Software A.Keyboard C.Image Scanner D.Mouse C.Image Scanner

3.What is the standard input device in a computer system ? B.Keyboard A.Mouse C.Monitor D.Joystick B.Keyboard

4.What kind of input device should be used in Video Conferencing ? B.Point of Sale Terminal A.WebCam C.Digital ViewCam D.None of the above A.WebCam

5.Which of the following is used to recognize characters in cheque ? B.OMR reader A.OCR reader C.MCR reader D.MICR reader

The End