Discovering Computers Living in a Digital World
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1 Discovering Computers 2011 Living in a Digital World
2 Objectives Overview See Page 257 for Detailed Objectives 2
3 Objectives Overview See Page 257 for Detailed Objectives 3
4 What Is Input? Inputis any data and instructions entered into the memory of a computer Pages Figure 5-1 4
5 What Is Input? Instructions can be entered into the computer in the form of programs, commands, and user responses Pages
6 What Are Input Devices Page 260 6
7 The Keyboard A keyboardis an input device that contains keys users press to enter data and instructions into a computer Page 260 Figure 5-2 7
8 The Keyboard Most desktop computer keyboards have Pages
9 The Keyboard The insertion point, also known as the cursor, is a symbol on the screen that indicates where the next character you type will appear Page 261 Figure 5-3 9
10 The Keyboard Page
11 The Keyboard An ergonomic keyboard has a design that reduces the chance of wrist and hand injuries Ergonomicsincorporates comfort, efficiency, and safety into the design of the workplace Page 262 Figure 5-4 Click to view Web Link, click, Click Web Link from left navigation, then click Ergonomics below 11
12 The Keyboard Keyboards on mobile devices typically are smaller and/or have fewer keys Some phones have predictive text input, which saves time when entering text using the phone s keypad Pages Figure
13 Pointing Devices Page
14 Mouse A mouseis a pointing device that fits under the palm of your hand comfortably Most widely used pointing device on desktop computers A mouse can be wired or wireless Pages Figures 5-6 and
15 Mouse Mouse operations Page 264 Figure
16 Other Pointing Devices Pages Figures
17 Touch Screens and Touch-Sensitive Pads A touch screen is a touch-sensitive display device Page 266 Figures Click to view Web Link, click, Click Web Link from left navigation, then click Multi-Touch Screens below 17
18 Touch Screens and Touch-Sensitive Pads Microsoft Surface Touch-sensitive pads Page 267 Figures
19 Pen Input With pen input, you touch a stylus or digital pen on a flat surface to write, draw, or make selections Page 268 Figure 5-16 Click to view Web Link, click, Click Web Link from left navigation, then click Signature Capture Pads below 19
20 Other Input for Smart Phones Page 269 Figures
21 Game Controllers Video games and computer games use a game controller as the input device that directs movements and actions of on-screen objects Pages Click to view Web Link, click, Click Web Link from left navigation, then click Game Controllers below 21
22 Game Controllers Page 270 Figure
23 Digital Cameras A digital camerais a mobile device that allows users to take pictures and store them digitally Page
24 Digital Cameras Page 272 Figure
25 Digital Cameras Two factors affect the quality of digital camera photos: Page
26 Voice Input Voice inputis the process of entering input by speaking into a microphone Voice recognitionis the computer s capability of distinguishing spoken words Page 274 Figure
27 Voice Input Audio inputis the process of entering any sound into the computer Page
28 Voice Input Music production software allows users to record, compose, mix, and edit music and sounds Page 274 Figure
29 Video Input Video inputis the process of capturing full-motion images and storing them on a computer s storage medium Page
30 Video Input Page 275 Figure
31 Video: Video Editing on Your Computer CLICK TO START 31
32 Video Input A Web camis a type of digital video camera that enables a user to: Pages Click to view Web Link, click, Click Web Link from left navigation, then click Web Cams below 32
33 Video Input A video conferenceis a meeting between two or more geographically separated people Pages Figures
34 Scanners and Reading Devices Page 277 Figure
35 Scanners and Reading Devices Page 278 Figure
36 Scanners and Reading Devices Optical character recognition (OCR)involves reading characters from ordinary documents A turnaround documentis a document you return to the company that creates and sends it Page 279 Figures
37 Scanners and Reading Devices Optical mark recognition (OMR) reads hand-drawn marks such as small circles or rectangles An OMR device scans the documents and matches the patterns of light Page 279 Figure
38 Scanners and Reading Devices A bar code reader, also called a bar code scanneruses laser beams to read bar codes Page 280 Figure 5-32 Click to view Web Link, click, Click Web Link from left navigation, then click Bar Code Readers below 38
39 Scanners and Reading Devices RFID(radio frequency identification) uses radio signals to communicate with a tag placed in or attached to an object An RFID readerreads information on the tag via radio waves RFID can track: Page
40 Scanners and Reading Devices Magnetic stripe card readersread the magnetic stripe on the back of cards such as: Page 281 Figure
41 Scanners and Reading Devices MICR(magnetic ink character recognition) devices read text printed with magnetized ink An MICR readerconverts MICR characters into a form the computer can process Banking industry uses MICR for check processing Page 281 Figure
42 Scanners and Reading Devices Data collection devices obtain data directly at the location where the transaction or event takes place Used in: Restaurants Grocery stores Factories Warehouses The outdoors Page 282 Figure
43 Biometric Input Biometrics authenticates a person s identity by verifying a personal characteristic Pages
44 Biometric Input hand geometry system Pages Figures Click to view Web Link, click, Click Web Link from left navigation, then click Biometric Input below fingerprint reader iris recognition system 44
45 Terminals A terminal is a computer that allows users to send data to and/or receive information from a host computer Pages Figures
46 Putting It All Together Page 285 Figure
47 Putting It All Together Page 285 Figure
48 Putting It All Together Page 285 Figure
49 Input Devices for Physically Challenged Users Several input devices are available to assist physically challenged users: Page 286 Click to view Web Link, click, Click Web Link from left navigation, then click Gesture Recognition below 49
50 Input Devices for Physically Challenged Users Keyboard with larger keys Head-mounted pointer Page 286 Figures
51 Summary Page
52 Discovering Computers 2011 Living in a Digital World Complete
Describe various types of pen input, and identify other types of input for smart phones
Discovering Computers 2010 Living in a Digital World Objectives Overview Define input and differentiate among a program, command, and user response Identify the keys and buttons commonly found on desktop
Discovering Computers Living in a Digital World
Discovering Computers 2011 Living in a Digital World Objectives Overview Define input and differentiate among a program, command, and user response Identify the keys and buttons commonly found on desktop
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