Pertemuan 3
Understanding Input Peripherals
1
Learning Outcomes
Pada akhir pertemuan ini, diharapkan mahasiswa
akan mampu :
• menjelaskan tentang contoh-contoh
perangka...
Outline Materi
• Pointing Devices
• Voice Input
• Input Devices for Mobile User
• Scanners
3
What Is Input?
• What is input?
4
Ø Input device is
any hardware
component used
to enter data or
instructions
Ø Data or in...
What Is Input?
• What are the two types of input?
5
§ Unprocessed text,
numbers, images,
audio, and video
Ø Instructions
§...
The Keyboard
• How is the keyboard divided?
6
Ø Typing area
Ø Numeric keypad
Ø Function keys, special
keys that issue
comm...
The Keyboard
• What is a cordless keyboard?
7
Ø Communicate with a receiver attached to a port on the
system unit
Pointing Devices
• What is a mouse?
8
Ø Pointing device that fits under palm of hand
§ Pointing device controls
movement o...
Pointing Devices
•What is an optical mouse?
9
Ø No moving mechanical
parts inside
Ø Senses light to detect
mouse’s movemen...
Other Pointing Devices
• What is a trackball?
10
Ø Stationary pointing device
with a ball on its top
Ø To move pointer, ro...
Other Pointing Devices
•What are a touchpad and a
pointing stick?
11
Ø Touchpad is small, flat,
rectangular pointing devic...
Other Pointing Devices
• What are a joystick and a wheel?
12
Ø Joystick is vertical
lever mounted
on a base
Ø Wheel is
ste...
Other Pointing Devices
• What is a light pen?
13
Ø Handheld input device
that can detect light
§ Press light pen against
s...
Other Pointing Devices
• What is a touch screen?
14
Ø Touch areas of screen with
finger
Ø Often used with kiosks
Other Pointing Devices
• What is a stylus?
15
Ø Looks like a ballpoint pen, but
uses pressure to write text and
draw lines...
Other Pointing Devices
• Where is a stylus used?
16
Ø Some desktop computers
Ø Many mobile computers
and devices
§ Handwri...
Voice Input
• How does voice recognition work?
17
Step 2. An analog-to-digital converter (ADC) translates
sound waves into...
Voice Input
•What is a MIDI (musical instrument
digital interface)?
18
Ø External device, such as
electronic piano keyboar...
PDAs, Tablet PCs, and Smart
Phones
•How is a data
entered into a
PDA?
19
PDAs, Tablet PCs, and Smart
Phones
•What is a portable
keyboard?
20
Ø Full-sized keyboard you
conveniently attach to
and r...
Virtual Keyboard
21
PDAs, Tablet PCs, and Smart
Phones
• What is a smart
phone?
22
Ø Users can input and send
text messages, graphics,
picture...
Digital Cameras
• What is a digital camera?
23
Ø Allows you to take
digital pictures
Ø Images viewable
immediately on
came...
Video Input
• What is video input?
24
Ø Process of entering full-motion images
into computer
Ø Video capture card is
adapt...
Video Input
• What are a PC video camera and a Web cam?
25
Ø PC video camerac—cDV camera used to capture video
and still i...
Video Input
• What is video conferencing?
26
§ Whiteboard is
another window on
screen that can
display notes and
drawings
...
Scanners and Reading
Devices
• What is a scanner?
27
Flatbed
Pen or
Handheld
Sheet-fed
Drum
Ø Light-sensing device that
re...
Scanners and Reading
Devices
• What is an optical reader?
28
§ Optical character recognition
(OCR) reads characters in
OCR...
Scanners and Reading
Devices
• What is a bar code reader?
29
Ø Uses laser beams to read bar codes
Scanners and Reading
Devices
• What is a data collection device?
30
Ø Obtains data directly at location where transaction
...
Terminals
• What is a point of sale (POS) terminal?
31
Ø Records purchases,
processes credit or debit
cards, and updates i...
Terminals
• What is an automated teller machine (ATM)?
32
Ø Self-service banking machine that connects to a host
computer ...
Terminals
• What is a smart display?
33
Ø Thin monitor that detaches from computer to function
as portable wireless touch ...
Biometric Input
• What is biometrics?
34
Ø Authenticates person’s identity by
verifying personal characteristic
§ Fingerpr...
Biometric Input
• What are examples of biometric technology?
35
Ø Voice verification system compares live
speech with stor...
• Source : Shelly, Gary B. Discovering
Computers (2004/2005/2006). Thomson
Course Technology. PPT for Chapter 5.
36
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Dsar ti ke 3

  1. 1. Pertemuan 3 Understanding Input Peripherals 1
  2. 2. Learning Outcomes Pada akhir pertemuan ini, diharapkan mahasiswa akan mampu : • menjelaskan tentang contoh-contoh perangkat input pada komputer 2
  3. 3. Outline Materi • Pointing Devices • Voice Input • Input Devices for Mobile User • Scanners 3
  4. 4. What Is Input? • What is input? 4 Ø Input device is any hardware component used to enter data or instructions Ø Data or instructions entered into memory of computer
  5. 5. What Is Input? • What are the two types of input? 5 § Unprocessed text, numbers, images, audio, and video Ø Instructions § Programs § Commands § User responses Ø Data
  6. 6. The Keyboard • How is the keyboard divided? 6 Ø Typing area Ø Numeric keypad Ø Function keys, special keys that issue commands
  7. 7. The Keyboard • What is a cordless keyboard? 7 Ø Communicate with a receiver attached to a port on the system unit
  8. 8. Pointing Devices • What is a mouse? 8 Ø Pointing device that fits under palm of hand § Pointing device controls movement of pointer, also called mouse pointer Ø Mechanical mouse has rubber or metal ball on underside mouse buttons wheel button mouse pad ball
  9. 9. Pointing Devices •What is an optical mouse? 9 Ø No moving mechanical parts inside Ø Senses light to detect mouse’s movement Ø More precise than mechanical mouse Ø Connects using a cable, or wireless
  10. 10. Other Pointing Devices • What is a trackball? 10 Ø Stationary pointing device with a ball on its top Ø To move pointer, rotate ball with thumb, fingers, or palm of hand
  11. 11. Other Pointing Devices •What are a touchpad and a pointing stick? 11 Ø Touchpad is small, flat, rectangular pointing device sensitive to pressure and motion Ø Pointing stick is pointing device shaped like pencil eraser positioned between keys on keyboard
  12. 12. Other Pointing Devices • What are a joystick and a wheel? 12 Ø Joystick is vertical lever mounted on a base Ø Wheel is steering-wheel-type input device § Pedal simulates car brakes and accelerator
  13. 13. Other Pointing Devices • What is a light pen? 13 Ø Handheld input device that can detect light § Press light pen against screen surface and then press button on pen
  14. 14. Other Pointing Devices • What is a touch screen? 14 Ø Touch areas of screen with finger Ø Often used with kiosks
  15. 15. Other Pointing Devices • What is a stylus? 15 Ø Looks like a ballpoint pen, but uses pressure to write text and draw lines Ø Used with graphics tablets, flat electronic boards
  16. 16. Other Pointing Devices • Where is a stylus used? 16 Ø Some desktop computers Ø Many mobile computers and devices § Handwriting recognition software translates handwriting into characters that computer can process
  17. 17. Voice Input • How does voice recognition work? 17 Step 2. An analog-to-digital converter (ADC) translates sound waves into digital measurements computer can process. Measurements include pitch, volume, silences, and phonemes. Phonemes are sound units such as aw and guh. 10010111010110101100001101 Step 3. Software compares spoken measurements with those in its database to find a match or list of possible matches. Matches Step 4. To narrow a list down, software presents user with a list of choices or uses a natural language component to predict most likely match. User may correct any selection made by software. Natural Language Engine Step 1. A user dictates text into a microphone.
  18. 18. Voice Input •What is a MIDI (musical instrument digital interface)? 18 Ø External device, such as electronic piano keyboard, to input music and sound effects
  19. 19. PDAs, Tablet PCs, and Smart Phones •How is a data entered into a PDA? 19
  20. 20. PDAs, Tablet PCs, and Smart Phones •What is a portable keyboard? 20 Ø Full-sized keyboard you conveniently attach to and remove from PDA
  21. 21. Virtual Keyboard 21
  22. 22. PDAs, Tablet PCs, and Smart Phones • What is a smart phone? 22 Ø Users can input and send text messages, graphics, pictures, video clips, and sound files Ø Many have a built-in or attachable camera
  23. 23. Digital Cameras • What is a digital camera? 23 Ø Allows you to take digital pictures Ø Images viewable immediately on camera § Download to computer § Post pictures to Web
  24. 24. Video Input • What is video input? 24 Ø Process of entering full-motion images into computer Ø Video capture card is adapter card that converts analog video signal into digital signal that computer can use Ø Digital video (DV) camera records video as digital signals
  25. 25. Video Input • What are a PC video camera and a Web cam? 25 Ø PC video camerac—cDV camera used to capture video and still images, and to make video telephone calls on Internet § Also called PC camera Ø Web camc—cvideo camera whose output displays on a Web page
  26. 26. Video Input • What is video conferencing? 26 § Whiteboard is another window on screen that can display notes and drawings simultaneously on all participants’ screens Ø Two or more geographically separated people who use network on Internet to transmit audio and video data
  27. 27. Scanners and Reading Devices • What is a scanner? 27 Flatbed Pen or Handheld Sheet-fed Drum Ø Light-sensing device that reads printed text and graphics § Used for image processing, converting paper documents into electronic images
  28. 28. Scanners and Reading Devices • What is an optical reader? 28 § Optical character recognition (OCR) reads characters in OCR font § Optical mark recognition (OMR) reads hand-drawn pencil marks, such as small circles § Bar code scanner Ø Device that uses light source to read characters, marks, and codes and then converts them into digital data
  29. 29. Scanners and Reading Devices • What is a bar code reader? 29 Ø Uses laser beams to read bar codes
  30. 30. Scanners and Reading Devices • What is a data collection device? 30 Ø Obtains data directly at location where transaction or event takes place Ø Transmits data over network or Internet
  31. 31. Terminals • What is a point of sale (POS) terminal? 31 Ø Records purchases, processes credit or debit cards, and updates inventory § Swipe credit or debit card through card readerc—creads customer’s personal data from magnetic strip
  32. 32. Terminals • What is an automated teller machine (ATM)? 32 Ø Self-service banking machine that connects to a host computer through a network
  33. 33. Terminals • What is a smart display? 33 Ø Thin monitor that detaches from computer to function as portable wireless touch screen
  34. 34. Biometric Input • What is biometrics? 34 Ø Authenticates person’s identity by verifying personal characteristic § Fingerprint scanner captures curves and indentations of fingerprint § Hand geometry system measures shape and size of person’s hand
  35. 35. Biometric Input • What are examples of biometric technology? 35 Ø Voice verification system compares live speech with stored voice pattern Ø Signature verification system recognizes shape of signature Ø 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
  36. 36. • Source : Shelly, Gary B. Discovering Computers (2004/2005/2006). Thomson Course Technology. PPT for Chapter 5. 36

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