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Chapter 1: Computers and Digital Basics
1
Computers and Digital Basics
Chapter 1
Chapter 1: Computers and Digital Basics
2
All Things Digital
• The Digital Revolution
• Convergence
• Digital Society
Chapter 1: Computers and Digital Basics
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The Digital Revolution
• What is it?
• What’s fueling it?
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The Digital Revolution
• Digital digital electronics
• Types
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The Digital Revolution
• Second Phase of the Digital Revolution
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The Digital Revolution
• 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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Personal Computers, Servers, Mainframes, and Supercomputers
• Workstation
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Personal Computers, Servers, Mainframes, and Supercomputers
• 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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Programs and Instruction Sets
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Programs and Instruction Sets
• Instruction set
• Machine language
• Machine code
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Programs and Instruction Sets
• 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
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