Mis lesson5 PPT
- 1. Business Hardware Class of Engr. Bea Lacsamana Ref. Chap 4 of Effy Oz
- 2. Learning Objectives List major hardware components of computers and explain their functions Classify computers into major categories and identify their strengths and weaknesses Identify and evaluate key criteria for deciding what computers or related devices to purchase
- 3. Hardware Components Physical components of the computer Input Devices – receive signals from outside the computer and transfer them into the computer e.g. Computer keyboard, mouse, tablets, digital pens, numeric keypads, touchscreens
- 4. Input Device
- 5. Hardware Components CPU - central processing unit -accepts instructions and data, decodes and executes instructions and stores results in memory for later display
- 7. Hardware Components Internal Memory - main memory or primary memory Located near the CPU and stores data and instructions just before and after the CPU processes them. RAM (Random Access Memory) ROM (Read Only Memory)
- 9. DDR3-double-data-rate three synchronous dynamic random access memory
- 10. Internal Storage SATA -Serial ATA (SATA or Serial Advanced Technology Attachment)
- 11. Hardware Components External Memory- External storage. e.g. Optical Discs, DVDs and Flash Memory
- 12. External Memory
- 13. External Memory
- 14. DAS, NAS and SAN DAS – Direct Access Storage A disk or array of disks directly connected to a server NAS – Network Attached Storage - comprises both the the storage media, such as hard disks and management software which is fully dedicated to serving (accessing) files over the network.
- 15. DAS, NAS and SAN SAN (Storage Area Network) - 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. RAID (Redundant Array of Independent Disks) -data is replicated on different disks to enhance processing speed and fault tolerance.
- 16. Business Considerations in Evaluating Storage Media Purpose of Data Storage For current operations or backup? Storage Volume -Price per megabit or megabyte Speed - Measured in rpm (5400,7200,10000 & 15000) Unit Space and Portability - physical size of the storage medium Cost - obtain the largest size of storage for the smallest amount of money Reliability and Life Expectancy Trade-Offs
- 17. Output Devices Most commonly computer monitors and printers
- 18. Output Devices
- 19. Output Devices
- 20. Parts of a computer
- 22. CLASSIFICATION OF COMPUTERS: A. Supercomputers
- 23. Supercomputers
- 24. The IBM Blue Gene
- 26. Sample Application of the Blue Gene Lawrence Livermore National Laboratory – California 130,000 processors Area half of a tennis court 360 trillion calculations/second
- 27. Supercomputers
- 28. Mainframes or “Big Iron” Less powerful and less expensive than the supercomputers (at least $1M). They cost several thousand to several hundred thousand dollars. Banks, Insurance Companies, Large retail chains, universities 40 to 50 % of the world’s data resides on mainframes Examples : IBM, Fujitsu, Unisys
- 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. Midrange Computers Smaller than mainframes and are less powerful Usually use a shared resource, serving hundreds of users that connect them from personal computers Ex. IBM AS/400, HP 9000, HP Alpha families
- 32. Blade Servers
- 34. Microcomputers Collective names for all personal computers, notebook computers and handheld computers.
- 35. What is technology convergence? Building technologies into a single piece of hardware
- 36. Points for Reflection Given the characteristics of the hardware elements as discussed what are the possible considerations in purchasing hardware: The equipment’s power Expansion slots The number and types of external ports The monitor type and resolution Ergonomics
- 37. Considerations in Purchasing Hardware Compatibility Hardware Footprint Reliability of the vendor, the warranty policy and the support given after the warranty expires Power consumption and Noise Cost
- 38. Scalability and Updating Hardware Resource can be expanded or upgraded to provide increased power as demands increase. Sometimes, Hardware should be discarded and new hardware should be installed to avoid performance gaps between software and hardware.
- 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