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Discovering Computers
Technology in a World of Computers,
Mobile Devices, and the Internet

Chapter 7
Input and Output

Objectives Overview

Differentiate among various types of keyboards: standard, compact, on‐ screen, virtual, ergonomic, gaming, and wireless

Describe characteristics of various pointing devices: mouse, touchpad, pointing stick, and trackball

Describe various types of pen input: stylus, digital pen, and graphics tablet

See Page 288 for Detailed Objectives

Describe various uses of touch screens

Describe various uses of motion input, voice input, and video input

Discovering Computers 2014: Chapter 7

2

Objectives Overview

Differentiate among various scanners and reading devices

Explain the characteristics of various displays

Identify the purpose and features of speakers, headphones and earbuds, data projectors, interactive whiteboards, and force‐feedback game controllers and tactile output

See Page 288 for Detailed Objectives

Summarize the various types of printers Identify various assistive technology input and output methods Discovering Computers 2014: Chapter 7

3

What Is Input?
• Input is any data and instructions entered into the memory of a computer •





Instructions can be in the form of software (programs and apps), commands, and user response
Command is an instruction that causes a program or app to perform a specific action.
A user response is an instruction a user issues by responding to message displayed by a program or app.

Pages 288– 289
Figure 7‐1

Discovering Computers 2014: Chapter 7

4

What Is Input?
• Commonly used input methods include:

Keyboard

Motion input

Page 288

Pointing devices Voice input

Touch screens

Pen input

Video input

Scanners and
reading

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