chapter 2: going with the data flow
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Chapter 2: Going with the Data Flow. Computer Literacy. Introduction. Computer’s Boot Process Interacting with the Computer Closing Programs and Shutting Down. Phase One: Start Me Up!. Power-on CPU ROM-BIOS Hardware Test (POST) Load OS. Data Flow. Interplay among CPU, RAM, Storage - PowerPoint PPT PresentationTRANSCRIPT
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Computer Literacy Chapter 2: Going with the Data Flow
Chapter 2:Going with the Data Flow
Computer Literacy
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Computer Literacy Chapter 2: Going with the Data Flow
Introduction
• Computer’s Boot Process• Interacting with the Computer• Closing Programs and Shutting
Down
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Computer Literacy Chapter 2: Going with the Data Flow
Phase One: Start Me Up!
• Power-on– CPU– ROM-BIOS
• Hardware Test (POST)• Load OS
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Computer Literacy Chapter 2: Going with the Data Flow
Data Flow
• Interplay among CPU, RAM, Storage• Load from storage• RAM as CPU’s short-term memory
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Computer Literacy Chapter 2: Going with the Data Flow
Operating System Load
• CPU loads OS files from hard drive to RAM
• Creates a user interface
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Computer Literacy Chapter 2: Going with the Data Flow
Phase Two: the Dance
• Input• Process• Output Rinse and repeat
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Computer Literacy Chapter 2: Going with the Data Flow
Input Devices
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Computer Literacy Chapter 2: Going with the Data Flow
Installing Input Devices
• Physical connections– DIN ports
(keyboard and mouse)
– USB– FireWire
• Software support– Plug and play– Drivers
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Computer Literacy Chapter 2: Going with the Data Flow
Internal Processing
• Opening programs– Start menu– Double-click
• Transfers files from hard drive to RAM
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Computer Literacy Chapter 2: Going with the Data Flow
Internal Processing
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Computer Literacy Chapter 2: Going with the Data Flow
Output Devices
• Feedback devices– Monitor– Projectors– Speakers– Voice synthesizers
• Hardcopy– Printer
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Computer Literacy Chapter 2: Going with the Data Flow
Output Devices
• Storage Devices– RAM is temporary storage– Need some other device for long-term storage
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Computer Literacy Chapter 2: Going with the Data Flow
Magnetic Storage Devices
• Magnetic– Hard drive– Floppy disk
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Computer Literacy Chapter 2: Going with the Data Flow
Optical Storage Devices
• CD-media– CD-ROM– CD-R– CD-RW
• DVD-media– DVD-ROM– DVD-R– DVD±RW
• Blu-ray Discs– BD-R– BD-RE
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Computer Literacy Chapter 2: Going with the Data Flow
Flash Memory
• Solid state (stores without electricity)
• Rewritable• Multiple formats
– USB thumb drives– Compact Flash
(CF)– Secure Digital (SD)
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Computer Literacy Chapter 2: Going with the Data Flow
Connecting Output Devices
• Physical connections (color-coded)• Install support software (drivers)
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Computer Literacy Chapter 2: Going with the Data Flow
Closing Programs and Shutting Down
• Do it the right way:1. Save and close documents2. Close applications3. Log out4. Power down
• Avoid corrupting files• Maintain security• Save the planet
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Computer Literacy Chapter 2: Going with the Data Flow
Summary
• Computer’s Boot Process• Interacting with the Computer• Closing Programs and Shutting
Down