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Technology Guide 1 Hardware. Agenda Computer system Computer types Devices Source data automation...
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Transcript of Technology Guide 1 Hardware. Agenda Computer system Computer types Devices Source data automation...
![Page 1: Technology Guide 1 Hardware. Agenda Computer system Computer types Devices Source data automation Selection Criteria.](https://reader036.fdocuments.in/reader036/viewer/2022062409/56649ead5503460f94bb5010/html5/thumbnails/1.jpg)
Technology Guide 1
Hardware
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Agenda
• Computer system
• Computer types
• Devices
• Source data automation
• Selection Criteria
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Computer System
• Codes• Memory size• Speed• Input• Output• CPU• Primary storage• Secondary storage• Communication device
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Codes
• ASCII
• EBCDIC
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Memory Size
• Bit (binary digit), byte
• Kilobyte
• Megabyte
• Gigabyte
• Terabyte
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Speed
• Millisecond
• Microsecond
• Nanosecond
• Picosecond
• Megahertz (MHz)
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Agenda
• Computer system
• Computer types
• Devices
• Source data automation
![Page 8: Technology Guide 1 Hardware. Agenda Computer system Computer types Devices Source data automation Selection Criteria.](https://reader036.fdocuments.in/reader036/viewer/2022062409/56649ead5503460f94bb5010/html5/thumbnails/8.jpg)
Computer Types - Generations
• First generation: vacuum tubes• Second generation: transistors• Third generation: integrated circuits• Fourth generation: very large-scale integrated
(VLSI) circuits or ultra large-scale integration (ULSI)
• Fifth generation: massively parallel processing• DNA computers• Optical computers
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Computer Types - Size
• Supercomputers• Mainframes• Minicomputers• Workstations• Microcomputers
– Desktop personal computers– Laptop computers/notebooks– Palmtop computers
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Computer Types - Size
• Personal digital assistant
• Smart cards
• Network computers (NCs)
• Windows-based terminals (WBTs)
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Agenda
• Computer system
• Computer types
• Devices
• Source data automation
• Selection Criteria
![Page 12: Technology Guide 1 Hardware. Agenda Computer system Computer types Devices Source data automation Selection Criteria.](https://reader036.fdocuments.in/reader036/viewer/2022062409/56649ead5503460f94bb5010/html5/thumbnails/12.jpg)
Devices - CPU
• Microprocessor• Control unit
– Machine cycle (MIPS): instruction time and execution time
– Clock speed: microcode (Megahertz MHz)
• Arithmetic-logic unit• Primary storage
– Random-access memory (RAM)– Block– Cache memory– Dynamic random access memories (DRAMs)– Read-only memory (ROM)
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Devices - Buses
• Data bus
• Address bus
• Control bus
• Word length & width of the buses
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Devices - Input
• Keyboard• Mouse• Touch Screen• Light pen• Joystick• Scanners• Voice• Automated teller machines
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Devices - Output
• Monitors
• Printers– Impact printers– Nonimpact printers
• Plotters
• Voice
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Devices – Secondary Storage• Magnetic tapes• Magnetic disks
– Redundancy Array of Inexpensive Disks (RAID)– Magnetic diskette
• Optical storage devices– Rewritable optical disks
• Compact disk – Read-only memory (CD-ROM) disks
• CD-writable (CD-W)• CD-Rewritable (CD_RW)
• Digital video disk (DVD)
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Agenda
• Computer system
• Computer types
• Devices
• Source data automation
• Selection Criteria
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Source Data Automation
• Point of sale terminals
• Bar code scanner
• Optical character reader
• Handwriting recognizers
• Voice recognizers
• Magnetic ink character readers
• Digital computer cameras
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Agenda
• Computer system
• Computer types
• Devices
• Source data automation
• Selection Criteria
![Page 20: Technology Guide 1 Hardware. Agenda Computer system Computer types Devices Source data automation Selection Criteria.](https://reader036.fdocuments.in/reader036/viewer/2022062409/56649ead5503460f94bb5010/html5/thumbnails/20.jpg)
Selection Criteria
• Cost• Speed• Usage• Compatibility• Reliability• Feature• Future growth• Vendor support
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Points to Remember
• Computer system
• Computer types
• Devices
• Source data automation
• Selection Criteria
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Discussion Questions
• What is the usage of the following different type of computer?– Supercomputers– Mainframes– Minicomputers– Workstations– Microcomputers
• Desktop personal computers• Laptop computers/notebooks• Palmtop computers
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Discussion Questions
• What are the important criteria for purchasing the computer hardware for a department store such as Macy’s?
• What are the important criteria for purchasing the computer hardware for a elementary school?
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Assignment
• Review technology guide 1
• Read technology guide 2, 3, 4
• Form group and prepare group list
• Group assignment
• Research paper