Mis lesson5 PPT


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Mis lesson5 PPT

  1. 1. Business Hardware Class of Engr. Bea Lacsamana Ref. Chap 4 of Effy Oz
  2. 2. Learning Objectives <ul><li>List major hardware components of computers and explain their functions </li></ul><ul><li>Classify computers into major categories and identify their strengths and weaknesses </li></ul><ul><li>Identify and evaluate key criteria for deciding what computers or related devices to purchase </li></ul>
  3. 3. Hardware Components <ul><li>Physical components of the computer </li></ul><ul><li>Input Devices – receive signals from outside the computer and transfer them into the computer </li></ul><ul><li>e.g. Computer keyboard, mouse, tablets, </li></ul><ul><li>digital pens, numeric keypads, touchscreens </li></ul>
  4. 4. Input Device
  5. 5. Hardware Components <ul><li>CPU - central processing unit </li></ul><ul><ul><li>-accepts instructions and data, decodes and executes instructions and stores results in memory for later display </li></ul></ul>
  7. 7. Hardware Components <ul><li>Internal Memory </li></ul><ul><ul><li>- main memory or primary memory </li></ul></ul><ul><ul><li>Located near the CPU and stores data and instructions just before and after the CPU processes them. </li></ul></ul><ul><ul><li>RAM (Random Access Memory) </li></ul></ul><ul><ul><li>ROM (Read Only Memory) </li></ul></ul>
  8. 8. Internal Memory
  9. 9. DDR3-double-data-rate three synchronous dynamic random access memory
  10. 10. Internal Storage SATA -Serial ATA (SATA or Serial Advanced Technology Attachment)
  11. 11. Hardware Components <ul><li>External Memory- </li></ul><ul><ul><li>External storage. </li></ul></ul><ul><ul><li>e.g. Optical Discs, DVDs and Flash Memory </li></ul></ul>
  12. 12. External Memory
  13. 13. External Memory
  14. 14. DAS, NAS and SAN <ul><li>DAS – Direct Access Storage </li></ul><ul><ul><li>A disk or array of disks directly connected to a server </li></ul></ul><ul><li>NAS – Network Attached Storage </li></ul><ul><li>- comprises both the the storage media, such as hard disks and management software which is fully dedicated to serving (accessing) files over the network. </li></ul>
  15. 15. DAS, NAS and SAN <ul><li>SAN (Storage Area Network) </li></ul><ul><li>- a network fully devoted to storage and and transfer of data between servers and storage devices. The storage devices are part of this dedicated network separate from the organization’s network. </li></ul><ul><li>RAID (Redundant Array of Independent Disks) </li></ul><ul><li>-data is replicated on different disks to enhance processing speed and fault tolerance. </li></ul>
  16. 16. Business Considerations in Evaluating Storage Media <ul><li>Purpose of Data Storage </li></ul><ul><ul><li>For current operations or backup? </li></ul></ul><ul><li>Storage Volume </li></ul><ul><li>-Price per megabit or megabyte </li></ul><ul><li>Speed </li></ul><ul><li>- Measured in rpm (5400,7200,10000 & 15000) </li></ul><ul><li>Unit Space and Portability </li></ul><ul><li>- physical size of the storage medium </li></ul><ul><li>Cost </li></ul><ul><li>- obtain the largest size of storage for the smallest amount of money </li></ul><ul><li>Reliability and Life Expectancy </li></ul><ul><li>Trade-Offs </li></ul>
  17. 17. Output Devices <ul><li>Most commonly computer monitors and printers </li></ul>
  18. 18. Output Devices
  19. 19. Output Devices
  20. 20. Parts of a computer
  21. 21. Hardware Components
  22. 22. CLASSIFICATION OF COMPUTERS: A. Supercomputers
  23. 23. Supercomputers
  24. 24. The IBM Blue Gene
  25. 25. Solution Comparison Chart
  26. 26. Sample Application of the Blue Gene <ul><li>Lawrence Livermore National Laboratory – California </li></ul><ul><li>130,000 processors </li></ul><ul><li>Area half of a tennis court </li></ul><ul><li>360 trillion calculations/second </li></ul>
  27. 27. Supercomputers
  28. 28. Mainframes or “Big Iron” <ul><li>Less powerful and less expensive than the supercomputers (at least $1M). They cost several thousand to several hundred thousand dollars. </li></ul><ul><li>Banks, Insurance Companies, Large retail chains, universities </li></ul><ul><li>40 to 50 % of the world’s data resides on mainframes </li></ul><ul><li>Examples : IBM, Fujitsu, Unisys </li></ul>
  29. 29. Mainframe : The I BM System z10 is a line of IBM mainframes. The z10 Enterprise Class (EC) was announced on February 26, 2008. On October 21, 2008, IBM announced the z10 Business Class (BC), a scaled down version of the z10 EC. The System z10 represents the first model family powered by the z10 quad core processing engine and the first to implement z/Architecture 2 (ARCHLVL 3).
  30. 30. Midrange Computers <ul><li>Smaller than mainframes and are less powerful </li></ul><ul><li>Usually use a shared resource, serving hundreds of users that connect them from personal computers </li></ul><ul><li>Ex. IBM AS/400, HP 9000, HP Alpha families </li></ul>
  31. 31. Midrange Computers
  32. 32. Blade Servers
  33. 33. Blade Servers Compared
  34. 34. Microcomputers <ul><li>Collective names for all personal computers, notebook computers and handheld computers. </li></ul>
  35. 35. What is technology convergence? <ul><li>Building technologies into a single piece of hardware </li></ul>
  36. 36. Points for Reflection <ul><li>Given the characteristics of the hardware elements as discussed what are the possible considerations in purchasing hardware: </li></ul><ul><li>The equipment’s power </li></ul><ul><li>Expansion slots </li></ul><ul><li>The number and types of external ports </li></ul><ul><li>The monitor type and resolution </li></ul><ul><li>Ergonomics </li></ul>
  37. 37. Considerations in Purchasing Hardware <ul><li>Compatibility </li></ul><ul><li>Hardware Footprint </li></ul><ul><li>Reliability of the vendor, the warranty policy and the support given after the warranty expires </li></ul><ul><li>Power consumption and Noise </li></ul><ul><li>Cost </li></ul>
  38. 38. Scalability and Updating Hardware <ul><li>Resource can be expanded or upgraded to provide increased power as demands increase. </li></ul><ul><li>Sometimes, Hardware should be discarded and new hardware should be installed to avoid performance gaps between software and hardware. </li></ul>
  39. 39. Sample of a Hardware Evaluation Form Factor What to look For Score Power Speed/Ram Expandability Greater No. of Board Slots Ports Great no. of ports for accessories Ergonomics Greater comfort & safety Compatibility with hardware with software Footprint Smaller area Support Availability of tel. & online support for troubleshooting Warranty Longer warranty period Cost Lower Cost
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