1. Chapter 5 - Input

2. Learning Objectives Define Input and list the two types.
List the areas on a keyboard.
List the three ways commands can be entered in an application.
Explain what a pointing device is, how it works and give examples.
Explain different pointing device operations.
Explain voice recognition.
Define video input and list two device used to obtain video.

3. Learning Objectives Explain what a scanner is and list examples.
List and define other systems used to input information into computing devices.
List types of biometric input.
List input devices for physically challenged users

4. Input Data or instructions entered into memory of computer
Input device is any hardware component used to enter data or instructions

5. Input – Two Types Data Commands
Unprocessed text, numbers, images, audio, and video
Commands
Programs
User Responses

6. The Keyboard
Function
Keys
Typing Area
Arrow
Keys
Numeric
Keypad

7. The Keyboard
Many applications allow for alternate ways to complete a command using buttons menus and key commands
Command
Menu Item
Icon
Key Combination
Copy
Edit/Copy
Ctrl + c
Open
File/Open
Ctrl + o
Paste
Edit/Paste
Ctrl + v

8. The Keyboard - Standard

9. The Keyboard - Ergonomic

10. The Keyboard - Wireless

11. The Keyboard - Notebook

12. The Keyboard – Handheld

13. The Keyboard – On Screen

14. Pointing Devices
Any device that controls the movement of the pointer on a display device.
The pointer on the screen can take several different forms
I-beam
block arrow
pointing hand

15. Pointing Devices – Mechanical Mouse
Movement of mouse translates into signals computer understands
X axis
Y axis

16. Pointing Devices – Optical Mouse
No moving mechanical parts inside uses light to detect mouse’s movement
More precise than mechanical mouse

17. Pointing Devices – Common Mouse Operations
Click
Double-
click
Tripple-
click
Right-
click
Drag
Right-
drag
Rotate
Wheel
Press
Wheel
Button

18. Pointing Devices – Trackball
Stationary pointing device with a ball on its top
To move pointer, rotate ball with thumb, fingers, or palm of hand

19. Pointing Devices – Touchpad
A small flat rectangular device that is sensitive to pressure and movement

20. Pointing Devices – Pointing Stick
A small eraser shaped object located between the keys on a keyboard.
Used in IBM book computers.

21. Pointing Devices – Touch Screen
A monitor with a pressure sensitive surface Used in IBM book computers.
Used in kiosks or independent learning systems.

22. Pointing Devices – Stylus
A stylus is used hand writing recognition software and special touch sensitive screens convert writing to characters a computer can recognize
Is used to create electronic signature systems.
Can be a iffy system when used to capture information for computer applications.

23. Pointing Devices – Stylus/Graphic Tablets
Looks like a ballpoint pen, but uses pressure to write text and draw lines

24. Voice Recognition
A systems that capture speech and convert it to recognizable computer data.

25. Digital Camera The difference between the two is what you find inside.
Digital cameras work in the same way that a film camera works.
The difference between the two is what you find inside.

26. Resolution Sharpness and clarity of image
The higher the resolution, the better the image quality,
Resolution of digital camera is measured in pixels.
Pixel (picture element) is single point in electronic image
Greater the number of pixels, the better the image quality

27. Video Input Process of entering full-motion images into computer
Video can come form;
Digital Video Recorders
Web Cams

28. Scanners Light-sensing device that reads printed text and graphics
Used for image processing, converting paper documents into electronic images

29. Scanners – Four Types
Sheet-fed
Flatbed
Pen or Handheld
Drum

30. Other Input Devices- Optical Readers
Device that uses light source to read characters, marks, and codes and then converts them into digital data

31. Optical Character Recognition (OCR)
Optical character recognition (OCR) reads characters in OCR font
Also a term for converting printed documents into electronic documents using a scanner.

32. Optical Mark Recognition (OMR)
Optical mark recognition reads hand-drawn pencil marks, such as small circles

33. Bar Codes
A identification code that consists of a set of vertical lines and spaces of different widths
The most recognized bar code is the UPC

34. Bar Codes Number system character identifies type of product
Check character verifies accuracy of scanned UPC symbol
Manufacturer identification number (Kellogg’s, in this case)
Item number (10 oz. box of Froot Loops

35. Bar Codes

36. Magnetic-Ink Character Recognition (MICR)
Banking industry almost exclusively uses MICR for check processing

37. Biometric Input
Authenticates person’s identity by verifying personal characteristic
Fingerprint scanner
Hand geometry
Voice verification
Iris recognition
Facial recognition

38. Input Devices for Physically Challenged Users
There are a number of devices available for the physically challenged to use the PC.
keyguard for limited hand mobility
onscreen keyboard
speech recognition
pointing device for those with motor disabilities