Chapter 1: Computers and Digital Basics 1 Computers and Digital Basics Chapter 1

Chapter 1: Computers and Digital Basics

1

Computers and Digital Basics

Chapter 1


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All Things Digital

• The Digital Revolution

• Convergence

• Digital Society


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The Digital Revolution

• What is it?

• What’s fueling it?


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• Digital digital electronics

• Types


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• Second Phase of the Digital Revolution


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• Computer network

• The Web

• Cyberspace

• Digitization


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Convergence

• Technological Convergence

• Enhanced functionality and convenience


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Digital Society

• Crosses cultural and geographic boundaries

• Promotes freedom of speech

• Expectation of privacy

• Intellectual property


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Digital Society

• Global, national, and individual economies

• Globalization

• Digital divide

• Digital technology permeates the very core of modern life


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Digital Devices

• Computer Basics

• Types of Computers

• Portables

• Microcontrollers


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Computer Basics

• What is a computer?


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Computer Basics

• Input

• Output

• Data

• Processing– Central Processing Unit (CPU)– Microprocessor


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Computer Basics

• Memory

• Storage

• File

• Computer program


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Computer Basics

• Stored program


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Computer Basics

• Application software

• System software


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Personal Computers, Servers, Mainframes, and Supercomputers

• Personal computer


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• Workstation


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• Server

• Mainframe

• Supercomputer

• Compute-intensive problem


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PDAs, Portable Players, and Smart Phones

• PDA

• Handheld computer

• Smart phone

• Portable media players


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PDAs, Portable Players, and Smart Phones


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Microcontrollers

• Microcontroller


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Digital Data Representation

• Data Representation Basics

• Representing Numbers, Text, and Pictures

• Quantifying Bits and Bytes

• Circuits and Chips


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Data Representation

• Data representation

• Digital devices

• Analog devices


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Representing Numbers, Text, and Pictures

• Numeric data

• Character data

• Digitizing


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Data Representation


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Quantifying Bits and Bytes


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Circuits and Chips

• Computer chip


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Circuits and Chips

• Bits can travel over circuits

• System board


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Digital Processing

• Programs and Instruction Sets

• Processor Logic


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Programs and Instruction Sets

• Computers, portable media players, handheld computers, and smart phones all work with digital data

• Programs

• Source code


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• Instruction set

• Machine language

• Machine code


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• Op code

• Operand


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Processor Logic

• ALU

• Registers

• Control unit

• Instruction cycle


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Processor Logic


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Password Security

• Authentication Protocols

• Password Hacks

• Password Security


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Authentication Protocols

• Authentication protocol– Biometrics

– User ID

– Password


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Password Hacks

• Identity theft

• Hackers

• Dictionary attack

• Brute force attack


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Password Hacks

• Sniffing

• Phishing

• Keylogger


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Password Security


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Password Security

• Strive to select a unique user ID that you can use for more than one site

• Maintain two or three tiers of passwords


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Password Security

• Password manager

CLICK TO START


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Chapter 1 Complete

Computers and Digital Basics

Documents

Chapter 1: Computers and Digital Basics 1 Computers and Digital Basics Chapter 1