See Page 257 for Detailed Objectives

(1)

Your Interactive Guide

to the Digital World

Discovering

(2)

Objectives Overview

Defne input and

differentiate amfong a

programf, comfmfand, and

user response

Defne input and

differentiate amfong a

programf, comfmfand, and

user response

Identify the keys and

buttons comfmfonly found

on desktop comfputer

keyboards, and describe

how keyboards for mfobile

comfputers and devices

differ fromf desktop

comfputer keyboards

Identify the keys and

buttons comfmfonly found

on desktop comfputer

keyboards, and describe

how keyboards for mfobile

comfputers and devices

differ fromf desktop

comfputer keyboards

Describe different mfouse

types and explain how to

use a mfouse

Describe different mfouse

types and explain how to

use a mfouse

Describe various types of

touch screens and explain

how a touch-sensitive pad

works

touch screens and explain

how a touch-sensitive pad

works

pen input, and identify

other types of input for

smfart phones

pen input, and identify

other types of input for

smfart phones

Sumfmfarize the purpose of

various gamfe controllers

Sumfmfarize the purpose of

various gamfe controllers

Discovering Comfputers 2012: Chapter 5 2

(3)

Objectives Overview

Explain how

resolution affects

the quality of a

picture captured

on a digital

camfera

Explain how

resolution affects

the quality of a

picture captured

on a digital

camfera

Describe the uses

of voice

recognition, Web

camfs, and video

conferencing

Describe the uses

of voice

recognition, Web

camfs, and video

conferencing

Discuss how

various scanners

and reading

devices work

Discuss how

various scanners

and reading

devices work

Sumfmfarize the

various biomfetric

devices

Sumfmfarize the

various biomfetric

devices

Discuss how POS

termfinals,

automfated teller

mfachines, and

DVD kiosks work

Discuss how POS

termfinals,

automfated teller

mfachines, and

DVD kiosks work

Identify

alternative input

devices for

physically

challenged users

Identify

alternative input

devices for

physically

challenged users

See Page 257

(4)

What Is Input?

•

Input

is any data and instructions

entered into the mfemfory of a comfputer

(5)

What Is Input?

Pages 258 - 259

•

Instructions can be entered into the comfputer

in the formf of programfs, comfmfands, and user

responses

A program is a series of related

instructions that tells a computer what

tasks to perform and how to perform

them

A program is a series of related

instructions that tells a computer what

tasks to perform and how to perform

them

Programs respond to commands that a

user issues

Programs respond to commands that a

user issues

A user response is an instruction a

user issues by replying to a question

displayed by a program

(6)

What Are Input Devices

An

input

device

is

any

hardware

comfponent

that allows

users to

enter data

and

instructions

into a

comfputer

An

input

device

is

any

hardware

comfponent

that allows

users to

enter data

and

instructions

into a

comfputer

(7)

The Keyboard

•

A

keyboard

is an input device that

contains keys users press to enter data

and instructions into a comfputer

(8)

The Keyboard

Pages 260 - 261

•

Most desktop comfputer keyboards

have…

Between 101

and 105 keys

Between 101

and 105 keys

A numferic

keypad on the

right side of

the keyboard

A numferic

keypad on the

right side of

the keyboard

Function keys,

CTRL keys, ALT

keys, and

arrow keys

Function keys,

CTRL keys, ALT

keys, and

arrow keys

WINDOWS key

(9)

The Keyboard

•

The

insertion point

, also known as the

cursor, is a symfbol on the screen that

indicates where the next character you

type will appear

(10)

The Keyboard

(11)

The Keyboard

•

An ergonomfic keyboard has a design

that reduces the chance of wrist and

hand injuries

•

Ergonomics

incorporates comffort,

efficiency, and safety into the design of

the workplace

(12)

The Keyboard

•

Keyboards on mfobile devices typically

are smfaller and/or have fewer keys

•

Somfe phones have predictive text input,

which saves timfe when entering text

using the phone’s keypad

(13)

Pointing Devices

(14)

Mouse

•

A

mouse

is a pointing device that fts

under the palmf of your hand

comffortably

–

Most widely used pointing device on

desktop comfputers

•

A mfouse can be wired or wireless

(15)

Mouse

•

Mouse operations

(16)

Other Pointing Devices

(17)

Touch Screens and

Touch-Sensitive Pads

•

A

touch screen

is a touch-sensitive

display device

Page 266

(18)

Touch Screens and

Touch-Sensitive Pads

Microsoft Surface

Touch-sensitive pads

(19)

Pen Input

•

With

pen input

, you touch a

stylus

or

digital pen

on a fat surface to write, draw,

or mfake selections

(20)

Other Input for Smart Phones

(21)

Game Controllers

•

Video gamfes and comfputer gamfes use a

game controller

as the input device that

directs mfovemfents and actions of on-screen

objects

(22)

Game Controllers

(23)

Digital Cameras

•

A

digital camera

is a mfobile device

that allows users to take pictures and

store themf digitally

(24)

Digital Cameras

(25)

Digital Cameras

•

Two factors affect the quality of digital camfera

photos:

(26)

Voice Input

•

Voice input

is the

process of entering

input by speaking

into a mficrophone

•

Voice recognition

is the comfputer’s

capability of

distinguishing

spoken words

(27)

Voice Input

•

Audio input

is the process of entering

any sound into the comfputer

(28)

Voice Input

•

Music production software allows users

to record, comfpose, mfix, and edit mfusic

and sounds

(29)

Video Input

•

Video input

is the process of capturing full-mfotion

imfages and storing themf on a comfputer’s storage

mfediumf

(30)

Video Input

(31)

Video: Video Editing on Your

Computer

(32)

Video Input

•

A

Web cam

is a type of digital video

camfera that enables a user to:

(33)

Video Input

•

A

video conference

is a mfeeting

between two or mfore geographically

separated people

(34)

Scanners and Reading

Devices

(35)

Scanners and Reading

Devices

(36)

Devices

•

Optical character recognition (OCR)

involves reading characters fromf ordinary

documfents

•

A

turnaround document

is a documfent you

return to the comfpany that creates and sends

it

(37)

Scanners and Reading

Devices

•

Optical mark

recognition

(

OMR

) reads

hand-drawn mfarks such

as smfall circles or

rectangles

•

An OMR device

scans the

documfents and

mfatches the

patterns of light

(38)

Devices

•

A

bar code

reader

, also called

a

bar code

scanner

uses laser

beamfs to read

bar

codes

(39)

Devices

•

RFID

(radio frequency identifcation) uses radio

signals to comfmfunicate with a tag placed in or

attached to an object

•

An

RFID reader

reads informfation on the tag via

radio waves

•

RFID can track:

(40)

Devices

•

Magnetic stripe card readers

read

the mfagnetic stripe on the back of cards

such as:

(41)

Devices

•

MICR

(mfagnetic ink character recognition) devices

read text printed with mfagnetized ink

•

An

MICR reader

converts MICR characters into a

formf the comfputer can process

•

Banking industry uses MICR for check processing

(42)

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

(43)

Biometric Input

•

Biomfetrics authenticates a person’s

identity by verifying a personal

characteristic

(44)

Biometric Input

Pages 282 – 283

fngerpri

nt

reader

hand

geomfetry

systemf

iris

recognitio

(45)

Terminals

•

A termfinal is a comfputer that allows users to

send data to and/or receive informfation fromf

a host comfputer

(46)

Putting It All Together

(47)

Putting It All Together

(48)

Putting It All Together

(49)

Input Devices for Physically

Challenged Users

•

Several input devices are available to

assist physically challenged users:

(50)

Input Devices for Physically

Challenged Users

Keyboard with larger

keys

Head-mounted

pointer

(51)

Summary

(52)

Your Interactive Guide

to the Digital World

Discovering

Computers 2012