Hardware 1. 1. Identify the major hardware components of a computer system. 2. Discuss strategic...
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Hardware
11
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1. Identify the major hardware components of a computer system.
2.Discuss strategic issues that link hardware design to business strategy.
3.Describe the hierarchy of computers according to power and their respective roles.
4.Differentiate the various types of input and output technologies and their uses.
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5. Describe the design and functioning of the central processing unit.
6. Discuss the relationships between microprocessor component designs and performance.
7. Describe the main types of primary and secondary storage.
8. Distinguish between primary and secondary storage along the dimensions of speed, cost, and capacity.
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1. Introduction
2.Strategic Hardware Issues
3.Computer Hierarchy
4. Input and Output Technologies
5.The Central Processing Unit
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IntroductionTG 1.1
• Hardware Consists of the Following:– Central Processing Unit– Primary Storage– Secondary Storage– Input Technologies– Output Technologies– Communication Technologies
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Strategic Hardware IssuesTG 1.2
• To Exploit Computer Hardware for Competitive Advantage You Must Address the following:– Rapid price reductions and performance
advancements in Hardware– Need for new hardware infrastructures– How will new work styles enabled by
portable computers and advanced communication technologies benefit employees and the organization?
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Computer HierarchyTG 1.3
• Supercomputers• Mainframe computers• Midrange Computers (aka
Minicomputers• Microcomputers• Wearable Computers• It’s Personal: Purchasing a
Computer
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Microcomputers
• Desktop PC’s• Thin-Client / Fat Client Systems• Laptop and Notebook Computers• Netbooks• Tablet Computers
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It’s Personal: Purchasing a Computer
• Major Considerations for Purchasing a Personal Computer–What do you plan to do with your computer?
–Where do you plan to use your computer?
– How long do you need service from this computer?
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Input and Output Technologies
TG 1.4
• Multimedia Technology• Input Devices• Output Devices
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Input Devices
• Human Data-Entry Devices• Gesture-Based Input• Source-Data Automation Input
Devices
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Input Devices –Human Data-Entry Devices• Keyboards• Mouse• Optical Mouse• Trackball• Pointing Stick• Touchpad• Graphics Tablet
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Input Devices –Human Data-Entry Devices• Joystick• Touch Screen• Stylus• Digital Pen• Web Camera (Webcam)• Voice-Recognition
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Input Devices –Gesture-Based Input• Gesture Recognition• Wii• Microsoft Kinect• Leap Motion Controller
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Input Devices –Source Data Automation Devices• Automatic Teller Machine (ATM)• Magnetic Strip Reader• Point-of-sale Terminals• Barcode Scanners• Optical Mark Reader
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Input Devices –Source Data Automation Devices• Magnetic Ink Character Reader• Optical Character Recognition• Sensors• Cameras• Radio Frequency Identification (RFID)
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Output Devices
• Monitors• Printers• Voice Output
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Output Devices - Monitors• Monitors– Cathode Ray Tubes (CRT)
– Liquid Crystal Displays (LCD)
– Flexible Displays
– Organic Light-Emitting Diodes (OLED)
– Retinal Scanning Displays
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Output Devices - Printers
• Printers– Laser
– Inkjet
– Thermal
– Plotters
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Output Devices – Voice Output• Voice Output– Electronic Book Reader
– Pocket Projector
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The Central Processing Unit (CPU)
TG 1.5
– Microprocessor
– Control Unit
– Arithmetic-Logic Unit (ALU)
• How the CPU Works• Advances in Microprocessor
Design• Computer Memory• PC Components/Cost Compared
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How the CPU Works
• Inputs come into the CPU from random access memory (RAM)
• Data and instructions travel in the chip via electrical pathways called buses.
• The Control Unit directs the flow of data and instructions within the chip
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How the CPU Works (Con’t)• The ALU receives the data and
instructions from the registers and makes the desired computation
• The data in their original for an the instructions are sent to storage registers and then are sent back to a storage place outside the chip.
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Advances in Microprocessor Design• Moore’s Law• Producing increasingly miniaturized
transistors• Placing multiple processors on one
chip• April 2012, Intel launched next
generation chips using a three-dimensional (3D) design
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Computer Memory
• Memory Capacity• Primary Storage• Secondary Storage
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Computer Memory – Memory Capacity Hierarchy• Bit• Byte• Kilobyte• Megabyte• Gigabyte
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Computer Memory – Memory Capacity Hierarchy• Terabyte• Petabyte• Exabyte• Zettabyte
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Computer Memory – Primary Storage• Primary Memory (aka Main Memory)• Four Main Types of Primary Storage– Register Memory
– Cache Memory
– Random Access Memory (RAM)
– Read-Only Memory (ROM)
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Computer Memory – Secondary Storage• Magnetic Tape• Magnetic Discs• Solid State Drives (SSD)• Optical Storage Devices• Flash Memory
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PC Components / Cost ComparedYear Chip RAM Hard Drive Monitor Cost
1997 Pentium II 64 MB 4 GB 17-inch $4,000
2007 Dual-core 1 GB 250 GB 19-inch $1,700
2013 Quad-core 16 GB 2 TB 27-inch $1,700