Chapter 5 Input

standingtopAI and Robotics

Nov 17, 2013 (3 years and 8 months ago)

87 views

Chapter 5

Input

Chapter 5 Objectives

Define input

List the characteristics of a keyboard

Describe different mouse types

and how they work

Summarize how various pointing

devices work

Explain how voice recognition works

Describe various input devices

for PDAs, smart phones, and Tablet PCs

Explain how a digital camera works

Describe uses of PC video cameras,

Web cams, and video conferencing

Discuss various scanners and reading
devices and how they work

Explain the types of terminals

Summarize the various biometric
devices

Identify alternative input devices for
physically challenged users

Next

What Is Input?

What is

input
?

p. 234 and 236 Fig. 5
-
1

Next


Input device

is any hardware component that
allows users to enter data and instructions


Data or instructions entered into memory of
computer

What Is Input?

What are the two types of input?

p. 234

Next


Unprocessed text,

numbers, images,

audio, and video


Instructions


Programs


Commands


User responses


Data

The Keyboard

How is the
keyboard

divided?

p. 236 Fig. 5
-
2

Next


Typing area


Numeric keypad



Function keys, special

keys that issue

commands

The Keyboard

What is the

insertion point
?

p. 237 Fig. 5
-
3

Next


Blinking vertical bar that indicates where next
character you type will display


Pointer

changes

location and shape

as you move mouse

or other pointing

device

The Keyboard

What is a

cordless keyboard?

p. 238 Fig. 5
-
4

Next


Communicate with a
receiver attached to a
port on the system
unit

Pointing Devices

What is a

mouse
?

p. 239 Fig. 5
-
5

Next


Pointing device that fits under palm of hand


Pointing device

controls
movement of pointer, also
called mouse pointer


Mechanical mouse

has rubber or metal

ball on underside

Click to view Web Link,

click Chapter 5, Click Web Link

from left navigation,

then click Mouse

below Chapter 5

mouse buttons

mouse pad

ball

wheel
button

Pointing Devices

What is an

optical mouse?

p. 239 Fig. 5
-
6

Next


No moving mechanical
parts inside


Senses light to detect
mouse’s movement


More precise than
mechanical mouse


Connects using a

cable, or wireless

Tilt

wheel

Press

wheel

button

Right
-

drag

Right
-

click

Triple
-

click

Double
-

click

Pointing Devices

What are common mouse operations?

p. 240 Fig. 5
-
7

Next

Point

Click

Drag

Rotate

wheel

Video: Alternatives to Your Boring Mouse

Beyond the mouse; cool alternatives to mousing around

low quality

(click to start)

high quality

(click to start)

Next

Other Pointing Devices

What is a

trackball
?

p. 241 Fig. 5
-
8

Next


Stationary pointing device
with a ball on its top or side


To move pointer, rotate ball
with thumb, fingers, or palm
of hand

Other Pointing Devices

What are a

touchpad

and a


pointing stick
?


p. 241
-

242 Figs. 5
-
9

5
-
10

Next


Touchpad

is small, flat,
rectangular pointing device
sensitive to pressure and motion


Pointing stick

is pointing device
shaped like pencil eraser
positioned between keys on
keyboard

Click to view Web Link,

click Chapter 5, Click Web Link

from left navigation,

then click Touchpad below
Chapter 5

Other Pointing Devices

What are a

joystick

and a

wheel
?

p. 242 Fig. 5
-
11

Next


Joystick

is vertical

lever mounted

on a base


Wheel

is

steering
-
wheel
-
type

input device


Pedal simulates

car brakes and
accelerator

Other Pointing Devices

What is a

control pad

and a

gamepad
?

p. 242 Fig. 5
-
12

Next


Control pad

on an audio
player allows users to
scroll through music,
adjust volume, and
customize settings


Gamepad

a pointing
device that controls the
movement and actions of
players or objects in
games

Click to view Web Link,

click Chapter 5, Click Web Link

from left navigation,

then click iPod Click Wheel
below Chapter 5

Other Pointing Devices

What is a

light pen
?

p. 242

Next


Handheld input device
that can detect light


Press light pen against
screen surface and then
press button on pen

Other Pointing Devices

What is a

touch screen
?

p. 243 Fig. 5
-
13

Next


Touch areas of screen with
finger


Often used with kiosks

Click to view Web Link,

click Chapter 5, Click Web Link

from left navigation,

then click Touch Screen

below Chapter 5

Keyboard and Pointing Devices

What is a

stylus

and a
digital pen
?

p. 243
-

244 Fig. 5
-
14 and 5
-
15

Next


Looks like a ballpoint pen, but uses pressure to write
text and draw lines


Used with

graphics tablets
,
flat electronic boards

Click to view Web Link,

click Chapter 5, Click Web Link

from left navigation,

then click Pen Input

below Chapter 5

Voice Input

How does
voice recognition

work?

p. 245 Fig. 5
-
18

Next

Click to view Web Link,

click Chapter 5, Click Web Link

from left navigation,

then click Voice Input

below Chapter 5

Voice Input

What is a

MIDI (musical instrument

digital interface
)?

p. 246 Fig. 5
-
19

Next


External device, such as electronic piano
keyboard, to input music and sound
effects

PDAs, Tablet PCs, and Smart Phones

How is data
entered into a
PDA?

p. 247 Fig. 5
-
20

Next

PDAs, Tablet PCs, and Smart Phones

What is a

portable keyboard
and a docking station?

p. 248 Fig. 5
-
21

Next


A portable keyboard is
a full
-
sized keyboard
you conveniently attach
to and remove from
PDA


A docking station is an
external device that
holds a mobile
computer

PDAs, Tablet PCs, and Smart Phones

What is a

smart phone?

p. 248
-

249 Fig. 5
-
22

Next


Users can input and send text messages,
graphics, pictures, video clips, and sound files


Many have a built
-
in or attachable camera

PDAs, Tablet PCs, and Smart Phones

What is a

Tablet PC?

p. 249


250 Fig. 5
-
23

Next


Mobile computer that
includes handwriting
recognition software


Primary input device is a
pressure
-
sensitive digital
pen

Digital Cameras

What is a

digital camera
?

p. 250 Fig. 5
-
24

Next


Allows you to take

digital pictures


Images viewable
immediately on

camera


Download to

computer


Post pictures

to Web

Digital Cameras

How does a digital camera work?


p. 251 Fig. 5
-
25

Next

Digital Cameras

What is

resolution
?

p. 252 Fig. 5
-
26

Next


Sharpness and clarity of image


The higher the resolution, the better the image
quality, but the more expensive the camera


Pixel

(picture

element)

is single point in

electronic image


Greater the number of

pixels, the better the

image quality

Video Input

What is

video input
?

p. 253 Fig. 5
-
27

Next


Process of entering full
-
motion images
into computer


Video capture card

is
adapter card that converts
analog video signal into
digital signal that
computer can use


Digital video (DV)
camera

records video as
digital signals

Video Input

What is a

PC video camera

and a

Web cam
?

p. 253 Fig. 5
-
28

Next


PC video camera
c

c
digital video camera

used to
capture video and still images, and to make

video telephone calls on Internet


Also called
PC camera


Web cam
c

c
video camera

whose output displays on

a Web page

Click to view Web Link,

click Chapter 5, Click Web Link

from left navigation,

then click Digital Video Cameras
below Chapter 5

Video Input

What is

video conferencing
?

p. 254 Fig. 5
-
29

Next


Whiteboard is
another window on
screen that can
display notes and
drawings

simultaneously on

all participants’
screens


Two or more geographically separated people
who use network or Internet to transmit
audio and video data

Scanners and Reading Devices

What is a

scanner
?

p. 255 Fig. 5
-
30

Next


Light
-
sensing device that
reads printed text and
graphics


Used for image processing,
converting paper documents
into electronic images

Click to view Web Link,

click Chapter 5, Click Web Link

from left navigation,

then click Scanners

below Chapter 5

Drum

Flatbed

Pen or
Handheld

Sheet
-
fed

Scanners and Reading Devices

How does a

flatbed
scanner

work?

p. 256 Fig. 5
-
31

Next

Step 1:

Place the document to be scanned face down
on the glass window. Using buttons on the
scanner or the scanner program, start the
scanning process.

Step 2:

The scanner converts the

document content to digital

information, which is transmitted

through the cable to the

memory of the computer.

Step 3:
Once in the memory of the computer,
users can display the image, print it, e
-
mail it,
include it in a document, or place it on a Web
page.

Scanners and Reading Devices

What is an

optical reader?

p. 257 Fig. 5
-
32

Next


O
ptical
c
haracter
r
ecognition

(OCR)

reads characters in

OCR font


O
ptical
m
ark
r
ecognition

(OMR)

reads hand
-
drawn pencil
marks, such as small circles


Device that uses light source to read characters, marks,
and codes and then converts them into digital data

Scanners and Reading Devices

What is a

turnaround document
?


p. 257 Fig. 5
-
33

Next


Document that you
return to the company
that sent it


Portion you return has
information printed in
OCR characters

Scanners and Reading Devices

What is a

bar code reader
?

p. 258 Fig. 5
-
34

Next


Uses laser beams to read bar codes

Scanners and Reading Devices

What is a

bar code
?

p. 258 Fig. 5
-
35

Next


Identification code that consists of a set of vertical
lines and spaces of different widths


Universal

Product


Code

(UPC)

Other Input Devices

What is an

RFID reader
?


p. 259 Fig. 5
-
36

Next


Reads information on
the tag via radio waves


Can be handheld
devices or mounted in a
stationary object

Other Input Devices

What is a

magnetic stripe card reader
?


p. 260 Fig. 5
-
37

Next


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

What is a

magnetic
-
ink character recognition

(MICR) reader
?

Scanners and Reading Devices

p. 260 Fig. 5
-
38

Next


Can read text printed with magnetized ink


Banking industry almost exclusively uses MICR
for check processing

Scanners and Reading Devices

What is a

data collection device?

p. 261 Fig. 5
-
39

Next


Obtains data directly at location where transaction
or event takes place


Transmits data over

network

or Internet

Terminals

What is a

point of sale

(
POS
)

terminal
?

p. 261
-

262 Fig. 5
-
40

Next


Records purchases,
processes credit or
debit cards, and
updates inventory


Swipe credit or debit
card through card
reader


Reads customer’s
personal data from
magnetic strip

Terminals

What is an

automated teller machine (ATM)
?

p. 262 Fig. 5
-
41

Next


Self
-
service banking
machine that connects to a
host computer through a
network

Biometric Input

What is

biometrics?

p. 262 Fig. 5
-
42 and 5
-
43

Next


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

Click to view Web Link,

click Chapter 5, Click Web Link

from left navigation,

then click Biometric Input

below Chapter 5

Biometric Input

What are examples of biometric technology?

p. 263


264 Figs. 5
-
44

5
-
45

Next


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


Enhanced keyboard or ergonomic keyboard


Mouse


Stylus for PDA or smart phone


Joystick or wheel


30
-
bit 600 x 1200 ppi color scanner


3
-
megapixel digital camera


Headphones that include a microphone


PC video camera

Putting It All Together

What are recommended input devices for home users?

p. 265 Fig. 5
-
46

Next


Enhanced keyboard or ergonomic keyboard


Mouse


Stylus and portable keyboard for PDA or
smart phone, or digital pen for Tablet PC


36
-
bit 600 x 1200 ppi color scanner


3
-
megapixel digital camera


Headphones that include a microphone


PC video camera

Putting It All Together

p. 265 Fig. 5
-
46

Next

What are recommended input devices for

small office/home office users (SOHO)?


Wireless mouse for notebook computer


Touchpad or pointing stick on notebook computer


Stylus and portable keyboard for PDA or smart
phone, or digital pen for Tablet PC


3
-

or 4
-
megapixel digital camera


Headphones that include a microphone


Fingerprint scanner for notebook computer

Putting It All Together

What are recommended input devices for mobile users?

p. 265 Fig. 5
-
46

Next


Enhanced keyboard or ergonomic keyboard


Mouse


Stylus and portable keyboard for PDA or
smart phone


Pen for graphics tablet


48
-
bit 1200 x 1200 ppi color scanner


6
-

to 8
-
megapixel digital camera


Headphones that include a microphone


PC video camera

Putting It All Together

What are recommended input devices for power users?

p. 265 Fig. 5
-
46

Next


Enhanced keyboard or ergonomic keyboard


Mouse


Stylus and portable keyboard for PDA or smart phone, or
digital pen for Tablet PC


Touch screen


Light pen


42
-
bit 1200 x 1200 ppi color scanner


OCR/OMR readers, bar code readers, MICR reader, or data
collection devices


Microphone


Video camera for video conferences


Fingerprint scanner or other biometric device

Putting It All Together

p. 265 Fig. 5
-
46

Next

What are recommended input devices for large
business users?

Input Devices for Physically Challenged Users

What input devices are available
for those with physical limitations?

p. 266 Figs. 5
-
47

Next


Keyguard

allows users to rest
hands on keyboard without
accidentally pressing keys


Head
-
mounted pointer
controls pointer on screen


New developments include

gesture recognition and
computerized implant devices

Summary of Input

Keyboard, mouse, and other

pointing devices

Voice input

Input devices for PDAs, smart phones,
and Tablet PCs

Digital cameras

Video Input

Scanners and reading devices

Terminals

Biometric input

Input devices for physically

challenged users

Chapter 5 Complete