Mis lesson5 PPT
description
Transcript of Mis lesson5 PPT
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Business Hardware
Class of Engr. Bea Lacsamana
Ref. Chap 4 of Effy Oz
+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
+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
+Input Device
+Hardware Components
CPU - central processing unit -accepts instructions and data, decodes and executes
instructions and stores results in memory for later display
+INTEL PROCESSORS
+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)
+Internal Memory
+DDR3-double-data-rate three synchronous dynamic random access memory
+Internal StorageSATA -Serial ATA (SATA or Serial Advanced Technology Attachment)
+Hardware Components
External Memory- External storage.
e.g. Optical Discs, DVDs and Flash Memory
+External Memory
+External Memory
+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.
+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.
+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
+Output Devices
Most commonly computer monitors and printers
+Output Devices
+Output Devices
+Parts of a computer
+Hardware Components
+CLASSIFICATION OF COMPUTERS: A. Supercomputers
+Supercomputers
+The IBM Blue Gene
+Solution Comparison Chart
+Sample Application of the Blue Gene
Lawrence Livermore National Laboratory – California
130,000 processors
Area half of a tennis court
360 trillion calculations/second
+Supercomputers
+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
+Mainframe : The IBM 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).
+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
+Midrange Computers
+Blade Servers
+Blade Servers Compared
+Microcomputers
Collective names for all personal computers, notebook computers and handheld computers.
+What is technology convergence?
Building technologies into a single piece of hardware
+Points for Reflection
Given the characteristics of the hardware elements as discussed what are the possible considerations in purchasing hardware:
a. The equipment’s power
b. Expansion slots
c. The number and types of external ports
d. The monitor type and resolution
e. Ergonomics
+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
+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.
+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