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Chapter 05 input
Lecture notes
Course
Information Systems
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Your I nt e ra c t ive Guide
t o t he Digit a l World
Disc ove ring
Com put e rs 2 0 1 2
Cha pt e r 5
U nde rst a nding I nput
Objectives Overview
Define input and differentiate
among a program, command, and
user response
Identify the keys and buttons
commonly found on desktop
computer keyboards, and
describe how keyboards for
mobile computers and devices
differ from desktop computer
keyboards
Describe different mouse types
and explain how to use a mouse
Describe various types of touch
screens and explain how a touch‐
sensitive pad works
Describe various types of pen
input, and identify other types of
input for smart phones
Summarize the purpose of various
game controllers
Discovering Computers 2012: Chapter 5
See Page 2572
for Detailed Objectives
What Is Input?
• Input is any data and instructions entered into the
memory of a computer
Discovering Computers 2012: Chapter 5
Pages 258 – 259 4
Figure 5 ‐ 1
What Is Input?
Discovering Computers 2012: Chapter 5
Pages 258 ‐ 2595
• Instructions can be entered into the computer in the
form of programs, commands, and user responses
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
A user response is an instruction a user
issues by replying to a question
displayed by a program
The Keyboard
• A keyboard is an input device that contains keys
users press to enter data and instructions into a
computer
Discovering Computers 2012: Chapter 5
Page 2607
Figure 5 ‐ 2
The Keyboard
Discovering Computers 2012: Chapter 5
Pages 260 ‐ 2618
• Most desktop computer keyboards have...
The Keyboard
USB port
Wired
Keyboards
Bluetooth
IrDA
Wireless
Keyboards
Discovering Computers 2012: Chapter 5
Page 26210
The Keyboard
• An ergonomic keyboard has a design that reduces
the chance of wrist and hand injuries
• Ergonomics incorporates comfort, efficiency, and
safety into the design of the workplace
Discovering Computers 2012: Chapter 5
Page 26211
Figure 5 ‐ 4
Pointing Devices
Discovering Computers 2012: Chapter 5
Page 26313
Mouse
• A mouse is a pointing device that fits under the
palm of your hand comfortably
– Most widely used pointing device on desktop
computers
• A mouse can be wired or wireless
Discovering Computers 2012: Chapter 5
Pages 263 – 264 14
Figures 5 ‐ 6 and 5 ‐ 7
Other Pointing Devices
Trackball
A trackball is a
stationary
pointing
device with a
ball on its top
or side
Touchpad
A touchpad is
a small, flat,
rectangular
pointing
device that is
sensitive to
pressure and
motion
Pointing
Stick
A pointing
stick is a
pressure‐
sensitive
pointing
device shaped
like a pencil
eraser that is
positioned
between keys
on a keyboard
Discovering Computers 2012: Chapter 5
Pages 265 – 266 16
Figures 5 ‐ 9 – 5‐ 11
Touch Screens and Touch‐Sensitive Pads
• A touch screen is a touch‐sensitive display device
Discovering Computers 2012: Chapter 5
Page 26617
Figures 5 ‐ 12 – 5‐ 13
Pen Input
• With pen input, you touch a stylus or digital pen on a flat
surface to write, draw, or make selections
Discovering Computers 2012: Chapter 5
Page 26819
Figure 5 ‐ 16
Other Input for Smart Phones
Discovering Computers 2012: Chapter 5
Page 26920
Figures 5 ‐ 17 – 5‐ 18
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Chapter 05 input
Course: Information Systems
212 Documents
Students shared 212 documents in this course
University: Richfield Graduate Institute of Technology
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Your Interactive Guide
to the Digital World
Discovering
Computers 2012
Cha pter 5
Understanding Input
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