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matchmoaningΤεχνίτη Νοημοσύνη και Ρομποτική

17 Νοε 2013 (πριν από 3 χρόνια και 9 μήνες)

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7

INPUT AND
OUTPUT

© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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Competencies


Define input

Describe keyboard entry, pointing devices, &
scanning devices

Discuss image capturing devices, digitizing
devices, & audio input devices

© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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Competencies

cont.


Define output

Describe monitors, printers, and audio output
devices

Discuss combination input & output devices

© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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What is Input?

Any data or instructions used by a computer

Input devices

Hardware

Keyboards

Mice

Scanners

Other devices

Translates data into a form that the system unit can
process

© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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Keyboard Entry

Keyboards

Traditional keyboards

Flexible keyboards

Ergonomic keyboards

Wireless keyboards

PDA keyboards

Features

Typewriter keyboard with numeric pad

Special purpose keys

Toggle and combination keys

© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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Traditional Keyboard

© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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Pointing Devices

Mouse

Mechanical

Optical

Cordless
or wireless

Joystick

Touch Screen

Light Pen

© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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Scanning Devices

Optical scanners

Flatbed

Portable


Bar code readers

Handheld wand readers or platform scanners

Contain photoelectric cells that read bar codes

© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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Scanning Devices

Character and mark recognition devices

Scanners that recognize special characters &
marks

Magnetic ink character recognition (MICR)

Optical
-
character recognition (OCR)

Optical
-
mark recognition (OMR)


© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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Image Capturing Devices

Digital camera

Images recorded digitally on a disk

Images can be downloaded to a computer

Digital video camera

Records motion digitally

Can take still images as well

WebCams

Specialized digital video cameras

Broadcast images over the Internet

© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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Digitizing Devices

Graphics Tablets


Digital Notepads

© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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Audio Input Devices

Voice

Voice recognition systems

Discrete
-
speech recognition systems

Continuous
-
speech recognition system

Music

Musical Interface Digital Interface (MIDI)

© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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What is Output?

Processed data or information

Types of output

Text

Graphics

Audio & video

Output devices

Monitors

Printers


© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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Monitors

Known as screens or display screens

Output referred to as soft copy

Features

Resolution

Dot pitch

Refresh rate

Size

© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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More on Monitors

Cathode
-
ray tube or CRTs

Flat
-
panel

Liquid crystal display (LCD)

Portable and thinner than CRTs

Other monitors

E
-
books

Data projectors

High
-
definition television (HDTV)

© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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Printers

Translates information that has been processed
by the system unit

Output referred to as hard copy

Features

Resolution

Color capability

Speed

Memory

© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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Printers

Ink
-
jet printer

Laser printer

Personal laser printers

Shared laser printers

Thermal printer

Other printers

Dot
-
matrix

Plotters

Photo printers

© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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Audio Output Devices

Translates audio information into sounds that
people can understand

Common devices

Speakers

Headphones


© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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Combination Input and Output
Devices

Fax machines

Multifunction devices

Internet telephones

Telephony

Voice
-
over IP (VoIP)

Terminals

© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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Terminals

An input and output device

Connects to a mainframe or server

Types of terminals

Dumb terminal

Intelligent terminal

Network terminal

Internet terminal

© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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A Look to the Future

Neural Signals Inc.

Brain machine interface

Allows humans to control machines with their
thoughts

Individuals incapable of communication

Physically immobile people

© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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Key Terms

active matrix monitor
(190)

audio input device (185)

audio
-
output device
(193)


bar code (183)

bar code reader (183)

bar code scanner (183)

cathode ray tube monitor
(CRT) (189)



character recognition device
(183)

clarity (189)

color capability (printer)
(191)

combination device (193)

combination key (175)

continuous
-
speech
recognition system (188)



© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

7
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Key Terms

cordless mouse (180)

data projector (190)

digital camera (184)

digital notepad (185)

digital video camera
(184)

digitizing device (185)

discrete
-
speech
recognition system (188)

display screen (189)

dot
-
matrix printer (192)

dot pitch (189)

dots
-
per
-
inch (dpi) (191)

download (184)

dual
-
scan monitor (190)

dumb terminal (195)

e
-
book (190)

e
-
book reader (190)


© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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Key Terms

facsimile (fax) machine
(194)

flat
-
panel monitor (190)

Flatbed scanner (183)

graphics tablet (185)

hard copy (191)

Headphones (193)

high
-
definition television
(HDTV) (190)

host computer (195)

image capturing device
(184)

ink
-
jet printer (191)

input device (178)

input (178)

intelligent terminal (195)

Internet telephone (194)

Internet telephony (194)

© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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Key Terms

Internet terminal (195)

IP Telephony (194)

joystick (181)

keyboard (178)

laser printer (192)

light pen (182)

liquid crystal display
(LCD) (190)



Magnetic
-
ink character
recognition (MICR)
(183)

mark recognition device
(183)

mark sensing (183)

mechanical mouse (180)

memory (printer) (191)

Musical Interface Digital
Interface MIDI (188)

© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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Key Terms

MIDI device (188)

monitor (189)

mouse (180)

mouse pad (180)

mouse pointer (180)

multifunction device
(MFD) (194)

network computer (195)

network terminal (195)

numeric keypad (178)

optical character
recognition (OCR) (183)

Optical
-
mark recognition
(OMR) (183)

optical mouse (180)

optical scanner (182)

output (188)

output device (188)

© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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Key Terms

passive
-
matrix monitor
(190)

PC/TV (190)

personal laser printer
(192)

photo printer (192)

pixel (picture element)
(189)

platform scanner (183)

plotter (192)

pointing (180)

pointing device (180)

pointing stick (180)

portable scanner (183)

printer (191)

reader/sorter (183)

refresh rate (189)

resolution (monitor)(189)

© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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Key Terms

resolution (printer) (191)

roller ball (180)

scanner (182)

scanning device (182)

screen (189)

server (195)

shared laser printer (192)

size (viewable size) (189)

soft copy (189)

speakers (193)

speed (printer) (191)

telephony (194)

terminal (195)

thermal printer (192)

thin client (195)

thin film resistor monitor
(TFT) (190)

toggle key (179)

© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

7
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Key Terms

touch pad (180)

touch screen (181)

touch surface (180)

trackball (180)

Universal Product Code
(UPC) (183)

voice recognition system
(185)

voice
-
over IP (VoIP)
(194)

wand reader (183)

Web appliance (195)

WebCam (184)

Web camera (184)

Web terminal (195)

wireless mouse (180)

© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

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FAQs

What are pointing devices?

I would like to insert several images in a
document. How can I capture the images?

What are digitizing devices?

What is voice recognition?

What is the difference between a CRT and an
LCD display?

What is HDTV?

© 2005 The McGraw
-
Hill Companies, Inc. All Rights Reserved.

7
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31

Discussion Questions

Describe the three different mouse types
designed for input.

How does Internet telephony work? Discuss.

Discuss the features of multifunctional devices.

Describe the features of a monitor that help to
make images appear clearer on the screen.

What are MIDI devices and how are they used?