Chapter 5 Input

Chapter 5 Objectives Explain how voice recognition works Describe the two types of input List the characteristics of a keyboard Identify various types of keyboards Identify various types of pointing devices Understand how to input data into a handheld computer Identify the uses of a digital camera Explain how a mouse works Describe different mouse types Describe the various techniques used for video input Describe the uses of PC video cameras and Web cams Explain how scanners and other reading devices work Identify alternative input devices for physically challenged users p. 5.2 Next

What Is Input? ,[object Object],[object Object],[object Object],p. 5.2 Fig. 5-1 Next

What Is Input? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],DATA Bradley Kinkade 42 hours $12.50 per hour hard disk INSTRUCTIONS p. 5.3 Fig. 5-2 COMMANDS print the timecard PROGRAMS timecard USER RESPONSES Yes, the timecard entries are correct No, the timecard entries are not correct Next

What is Input? ,[object Object],p. 5.3 Data Collection of raw unprocessed facts, figures, and symbols Information Data that is organized, meaningful, and useful Next

What is Input? ,[object Object],p. 5.3 Program A series of instructions that tells a computer how to perform the tasks necessary to process data into information User response An instruction you can issue by replying to a question that a computer program displays Command An instruction given to a computer program Users can issue commands by typing or pressing keys on the keyboard, clicking a mouse button, speaking into a microphone, or touching an area of a screen Next

What is Input? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],p. 5.3 icons icons menu buttons Next

What are Input Devices? ,[object Object],[object Object],p. 5.4 scanners and reading devices voice input keyboard pointing device video input digital camera Next

The Keyboard ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Click to view Web Link then click Keyboards p. 5.4 Fig. 5-3 numeric keypad typing area function keys Next

The Keyboard ,[object Object],p. 5.4 Fig. 5-3 NUM LOCK key function keys APPLICATION key WINDOWS keys status lights numeric keypad additional keys Internet and multimedia controls arrow keys CD/DVD controls wrist rest typing area Next

The Keyboard ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],p. 5.4 Fig. 5-5 insertion point pointer Next

The Keyboard ,[object Object],[object Object],Command Button Menu Function Key(s) p. 5.4 Fig. 5-4 Copy Edit|Copy SHIFT+F2 Open File|Open CTRL+F12 Print File|Print CTRL+SHIFT+F12 Next

The Keyboard ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],p. 5.5 Fig. 5-6 Next

The Keyboard ,[object Object],[object Object],p. 5.6 Fig. 5-7 Next

The Keyboard ,[object Object],[object Object],[object Object],p. 5.6 Fig. 5-8 Next

Pointing Devices ,[object Object],[object Object],[object Object],[object Object],p. 5.7 I-beam pointing hand block arrow Next

Technology Trailblazer ,[object Object],[object Object],[object Object],[object Object],Click to view Web Link then click Douglas Engelbart p. 5.8 Next

Mouse ,[object Object],[object Object],[object Object],[object Object],Click to view Web Link then click Mouse Click to view video p. 5.7 Next

[object Object],[object Object],Mouse ,[object Object],[object Object],p. 5.7 Fig. 5-9 mouse pad ball wheel button mouse buttons Next

Mouse ,[object Object],[object Object],[object Object],[object Object],[object Object],p. 5.7 Fig. 5-10 back button wheel button forward button optical sensor Next

Mouse ,[object Object],p. 5.8 Cable Attach to a serial port, a mouse port, or USB port on the computer Cordless mouse Also called a wireless mouse Battery-powered device that transmits data using wireless technology, such a s radio waves or infrared light waves Next

Mouse ,[object Object],[object Object],p. 5.8 Fig. 5-11 pointer Step 1: Position the mouse in the middle of the mouse pad pointer Step 2: Move the mouse diagonally toward the left until the pointer rests on the Internet Explorer icon Next

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Other Pointing Devices ,[object Object],p. 5.9 Fig. 5-12 Press and release the primary mouse button, which usually is the left mouse button Click Move the mouse across a flat surface until the pointer on the desktop rests on the item of choice Point Roll the wheel forward or backward Rotate wheel Quickly press and release the left mouse button twice without moving the mouse Double-click Point to an item, hold down the right mouse button, move the item to the desired location on the screen , and then release the right mouse button Right-drag Press the wheel button while moving the mouse on the desktop Press wheel button Point to an item, hold down the left mouse button, move the item to the desired location on the screen, and then release the left mouse button Drag Press and release the secondary mouse button, which usually is the right mouse button Right-click Next

Company on the Cutting Edge ,[object Object],[object Object],[object Object],[object Object],Click to view Web Link then click Logitech p. 5.9 Next

Other Pointing Devices? ,[object Object],[object Object],[object Object],Click to view Web Link then click Trackballs p. 5.10 Fig. 5-13 trackball Next

Other Pointing Devices ,[object Object],[object Object],[object Object],[object Object],Click to view Web Link then click Touchpads p. 5.10 Fig. 5-14 touchpad Next

Other Pointing Devices ,[object Object],[object Object],Click to view Web Link then click Pointing Sticks p. 5.11 Fig. 5-15 pointing stick Next

Other Pointing Devices ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],p. 5.11 Fig. 5-16 joystick pedal wheel Next

Other Pointing Devices ,[object Object],[object Object],[object Object],[object Object],p. 5.12 Fig. 5-17 Next

Other Pointing Devices ,[object Object],[object Object],[object Object],[object Object],p. 5.12 Fig. 5-18 Next

Other Pointing Devices ,[object Object],[object Object],[object Object],[object Object],[object Object],Click to view Web Link then click Stylus p. 5.13 Fig. 5-19 stylus or pen Next

Other Pointing Devices ,[object Object],[object Object],[object Object],p. 5.13 Fig. 5-19 cursor Next

Other Pointing Devices ,[object Object],[object Object],[object Object],[object Object],Click to view Web Link then click E-signatures p. 5.13 Fig. 5-20 Next

Other Pointing Devices ,[object Object],[object Object],[object Object],p. 5.14 Fig. 5-21 Next

Voice Input ,[object Object],[object Object],[object Object],Click to view animation p. 5.14 speaker-dependent software The computer makes a profile of your voice You have to train the computer to recognize your voice speaker-independent software Has a built-in set of word patterns You do not have to train a computer to recognize your voice vs. speaker-dependent software speaker-independent software continuous speech Allows you to speak in a flowing conversational tone discrete speech You have to speak slowly and separate each word with a short pause vs. Next

Voice Input ,[object Object],Step 1: User dictates text into microphone. Step 2: An analog-to-digital converter (ADC) translates sound waves into digital measurements the computer can understand. Measurements include pitch, volume, silences, and phenomes. Phenomes are sound units such as aw and guh. Step 3: The software compares the spoken measurements to those in its database to find a match or list of possible matches. Step 4: To narrow a list down, the software presents the user with a list of choices or uses a natural language component to predict the most likely match. The user may correct any wrong selection made by the software. p. 5.15 Fig. 5-22 You’re right! … Your write …You’re right …Your right Natural Language Engine your, you’re right, write Matches Next

Voice Input ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],p. 5.16 Next

Voice Input ,[object Object],[object Object],[object Object],p. 5.16 Fig. 5-23 Next

[object Object],Input Devices for Handheld Computers ,[object Object],Click to view Web Link then click Handheld Computer Input Click to view video ,[object Object],[object Object],[object Object],p. 5.17 Fig. 5-24 Next

Input Devices for Handheld Computers ,[object Object],p. 5.17 Fig. 5-25 transfer data to desktop computer digital camera stylus voice input portable keyboard stylus handwriting recognition characters stylus on-screen keyboard Next

Company on the Cutting Edge ,[object Object],[object Object],[object Object],[object Object],Click to view Web Link then click Palm p. 5.14 Next

Technology Trailblazer ,[object Object],[object Object],[object Object],[object Object],Click to view Web Link then click DonnaDubinsky p. 5.17 Next

Digital Cameras ,[object Object],[object Object],[object Object],[object Object],[object Object],p. 5.18 Fig. 5-26 Next

Digital Cameras ,[object Object],[object Object],p. 5.18 PC Card floppy disk Clik! disk compact flash card memory stick mini-CD microdrive SuperDisk Next

Digital Cameras ,[object Object],Step 7: Using software supplied with the camera, the images are viewed on the screen, incorporated into documents, or printed. Step 2: The image is focused on a chip called a charge-coupled device (CCD). Step 3: The CCD generates an analog signal that represents the image. Step 1: Point to the image to photograph. Light passes into the lens of the camera. Step 4: The analog signal is converted to a digital signal by an analog-to-digital converter (ADC). Step 5: A digital signal processor (DSP) adjusts the quality of the image and stores the digital image on storage media in the camera. Step 1 Step 6: Images are transferred to a computer by plugging one end of the cable into a camera and the other cable end into a computer; or the images are copied to the hard disk directly from the media. p. 5.19 Fig. 5-27 Step 1 Step 2 Step 3 Step 1 Step 2 Step 4 Step 3 Step 1 Step 2 Step 5 Step 4 Step 3 Step 1 Step 2 Step 5 Step 4 Step 3 Step 1 Step 2 Step 6 Step 5 Step 4 Step 3 Step 1 Step 2 Step 7 Next

Digital Cameras ,[object Object],Click to view video p. 5.19 Studio camera A stationary camera used for professional studio work Most expensive and highest quality Field camera A portable camera that has many lenses and other attachments Can be quite expensive Point-and-shoot camera Provides acceptable quality photographic images for the home or small business user More affordable and lightweight Next

Digital Cameras ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],p. 5.20 Fig. 5-28 Next

Digital Cameras ,[object Object],p. 5.20 megapixel 1 million pixels optical resolution The actual photographed resolution dots per inch (dpi) Number of pixels in an inch of screen display bits per dot Number of bits a camera stores in a dot The more bits used to represent a dot, the more colors and shades of gray that can be represented enhanced resolution Also called interpolated resolution Uses a special formula to add pixels between those generated by the optical resolution Next

Video Input ,[object Object],[object Object],[object Object],[object Object],[object Object],p. 5.21 Fig. 5-29 analog video camera video-in plug digital video camera Next

Video Input ,[object Object],[object Object],[object Object],[object Object],p. 5.21 video digitizer Used to capture an individual frame from an analog video and then save the picture in a file video decoder A card that decompresses video data Next

Video Input ,[object Object],[object Object],[object Object],p. 5.22 Fig. 5-30 PC video camera Next

Video Input ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],p. 5.22 Next

Video Input ,[object Object],[object Object],[object Object],[object Object],[object Object],p. 5.23 Fig. 5-31 Next

Video Input ,[object Object],[object Object],[object Object],[object Object],p. 5.24 Fig. 5-32 Next

Scanners and Reading Devices ,[object Object],[object Object],[object Object],Click to view animation p. 5.24 Next

Scanners and Reading Devices ,[object Object],[object Object],[object Object],[object Object],p. 5.25 Fig. 5-34 Next

Scanners and Reading Devices ,[object Object],Step 2: A bright light moves underneath the scanned document Step 3: An image of the document is reflected into a series of mirrors Step 4: The light is converted to an analog electrical current that is converted to a digital signal by an analog-to-digital converter (ADC) Step 5: The digital information is sent to memory in the computer to be used by illustration, desktop publishing, or other software; or it is stored on disk Step 6: You can print the image, e-mail it, include it in a document, or place it on a Web page Step 1: The document to be scanned is placed face down on the glass window Step 1 p. 5.25 Fig. 5-33 Step 1 Step 2 Step 1 Step 2 Step 3 Step 1 Step 2 Step 3 Step 4 Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Next

Scanners and Reading Devices ,[object Object],Click to view Web Link then click Scanners Pen or handheld Drum Sheet-fed Flatbed p. 5.26 Fig. 5-34 Next

Scanners and Reading Devices ,[object Object],[object Object],[object Object],[object Object],[object Object],p. 5.26 Next

Scanners and Reading Devices ,[object Object],[object Object],p. 5.27 Optical character recognition (OCR) Optical mark recognition Bar code scanner Next

Scanners and Reading Devices ,[object Object],[object Object],p. 5.26 OCR device Includes a small optical scanner for reading characters and sophisticated software for analyzing what is read Software Works with an optical scanner to convert a scanned image into a text file that can be edited Next

Scanners and Reading Devices ,[object Object],[object Object],[object Object],[object Object],p. 5.27 Fig. 5-35 Next

Scanners and Reading Devices ,[object Object],[object Object],[object Object],p. 5.27 Fig. 5-36 Next

Scanners and Reading Devices ,[object Object],[object Object],p. 5.28 Fig. 5-38 Next

Scanners and Reading Devices ,[object Object],[object Object],[object Object],[object Object],p. 5.28 Fig. 5-39 Number system character identifies type of product Manufacturer identification number (Kellogg’s, in this case) Check character verifies accuracy of scanned UPC symbol Item number (10 oz. Box of Froot Loops Next

Scanners and Reading Devices ,[object Object],p. 5.29 Fig. 5-40 Libraries, blood banks, and air parcel carriers Codabar Code 39 Nonretail applications such as manufacturing, inventory, military, and health applications requiring numbers and letters in the bar code EAN – European Article Numbering Similar to UPC, except used in Europe. A variation of EAN is used for ISBN numbers on books Interleaved 2 of 5 Nonretail applications, such as game tickets, requiring only numbers in the bar code POSTNET – Postal Numeric Encoding Technique U.S. Postal Service to represent a postal code or delivery point code Supermarkets, convenience, and specialty stores used to identify manufacturers and products UPC – Universal Product Code Magazines and books to display a Web page Web bar code Next

Scanners and Reading Devices ,[object Object],[object Object],[object Object],p. 5.30 Fig. 5-41 check number bank number check amount account number Next

Input Devices for Physically Challenged Users ,[object Object],[object Object],[object Object],p. 5.31 Next

Input Devices for Physically Challenged Users ,[object Object],[object Object],[object Object],[object Object],[object Object],p. 5.31 Fig. 5-43 Next

Input Devices for Physically Challenged Users ,[object Object],[object Object],[object Object],p. 5.32 Fig. 5-44 Next

Input Devices for Physically Challenged Users ,[object Object],[object Object],[object Object],[object Object],p. 5.32 Fig. 5-45 Next

Input Devices for Physically Challenged Users ,[object Object],[object Object],p. 5.32 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Next

PUTTING IT ALL TOGETHER ,[object Object],p. 5.33 Fig. 5-46 Large Business ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Power Home ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Small Office/Home Office ,[object Object],[object Object],[object Object],[object Object],[object Object],Mobile Small Office/Home Office Mobile Home Power Large Business Next

Summary of Input ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Next

Chapter 5 Input

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Chapter 5 Input