1. Discovering Computers Fundamentals, Third Edition CGS 1000 Introduction to Computers and Technology Fall 2006

2. Discovering Computers Fundamentals, Third Edition Topics Quiz Quiz Chapter 5 Chapter 5 Class Activity Ex 73 to Ex 88 Class Activity Ex 73 to Ex 88

3. Discovering Computers Fundamentals, Third Edition Topics Covered Chapter 5 Objectives Chapter 5 Objectives Defined Input Defined Input Discussed about Discussed about Keyboard Keyboard Mouse Mouse Voice Input Voice Input Touch Screen Touch Screen Voice input Voice input Digital Cameras Digital Cameras

4. Discovering Computers Fundamentals, Third Edition Chapter 5 Input and Output

5. Discovering Computers Fundamentals, Third Edition Other Input Devices What is an optical reader? What is an optical reader?  Optical character recognition (OCR) reads characters in OCR font  Optical mark recognition (OMR) reads hand-drawn pencil marks, such as small circles  Bar code reader  Device that uses light source to read characters, marks, and codes and then converts them into digital data

6. Discovering Computers Fundamentals, Third Edition Other Input Devices What is an RFID reader? What is an RFID reader?  Reads information on the tag via radio waves  Can be handheld devices or mounted in a stationary object

7. Discovering Computers Fundamentals, Third Edition Other Input Devices What is a ? What is a magnetic stripe card reader?  Reads the magnetic stripe on the back of a credit card  Exposure to a magnetic field can erase the contents of a card’s magnetic stripe

8. Discovering Computers Fundamentals, Third Edition What is a magnetic-ink character recognition (MICR) reader? Other Input Devices  Can read text printed with magnetized ink  Banking industry almost exclusively uses MICR for check processing

9. Discovering Computers Fundamentals, Third Edition Other Input Devices What is a point of sale (POS) terminal?  Records purchases, processes credit or debit cards, and updates inventory

10. Discovering Computers Fundamentals, Third Edition Other Input Devices What is an What is an automated teller machine (ATM)?  Self-service banking machine that connects to a host computer through a network

11. Discovering Computers Fundamentals, Third Edition Other Input Devices What is What is biometrics?  Authenticates person’s identity by verifying a personal characteristic  Fingerprint scanner captures curves and indentations of fingerprint

12. Discovering Computers Fundamentals, Third Edition Other Input Devices What are examples of biometric technology? What are examples of biometric technology?  Voice verification system compares live speech with stored voice pattern  Signature verification system recognizes shape of signature  Iris recognition system reads patterns in blood vessels in back of eye  Biometric data is sometimes stored on smart card, which stores personal data on microprocessor embedded in card

13. Discovering Computers Fundamentals, Third Edition What is Output? What is ? What is output ?  Data that has been processed into a useful form, called information  Output device is any hardware component that can convey information to one or more people

14. Discovering Computers Fundamentals, Third Edition Display Devices What is a What is a display device?  Output device that visually conveys information  Information on display device sometimes called soft copy  Monitor houses display device as separate peripheral

15. Discovering Computers Fundamentals, Third Edition Display Devices What is an What is an LCD monitor?  Uses liquid crystal display  Have a small footprint  Mobile devices that contain LCD displays include  Notebook computer, Tablet PC, PDA, and Smart Phone

16. Discovering Computers Fundamentals, Third Edition Display Devices What is a ? What is a plasma monitor?  Displays image by applying voltage to layer of gas  Larger screen size and higher display quality than LCD, but are more expensive

17. Discovering Computers Fundamentals, Third Edition Display Devices What is a CRT monitor? What is a CRT monitor?  Contains cathode-ray tube (CRT)  Common sizes are 15, 17, 19, 21, and 22 inches  Viewable size is diagonal measurement of actual viewing area

18. Discovering Computers Fundamentals, Third Edition Display Devices What determines the quality of a CRT monitor? What determines the quality of a CRT monitor?  Screen resolution  Text created with a smaller dot pitch is easier to read  Refresh rate is speed at which monitor redraws images on screen

19. Discovering Computers Fundamentals, Third Edition Questions?