Technology in action
Download
1 / 33

Technology In Action - PowerPoint PPT Presentation


  • 238 Views
  • Updated On :

Technology In Action Chapter 5 Evaluating Your System: Understanding and Assessing Hardware Chapter Topics To buy or upgrade? Evaluating your system: CPU RAM Storage devices Video output Sound systems Computer ports System reliability Common Byte Measurements

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Technology In Action' - Gabriel


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Technology in action l.jpg
Technology In Action

Chapter 5

Evaluating Your System:

Understanding and Assessing Hardware


Chapter topics l.jpg
Chapter Topics

  • To buy or upgrade?

  • Evaluating your system:

    • CPU

    • RAM

    • Storage devices

    • Video output

    • Sound systems

    • Computer ports

  • System reliability


Common byte measurements l.jpg
Common Byte Measurements

Patterns of binary digits represent both the computer instructions and computer data

1 byte = 8 bits

1 KiloByte = 2^10 bytes = 1024 bytes

1 MegaByte = 2^20 bytes = 1024 KB = ~1 million bytes

1 GigaByte = 2^30 bytes = 1024 MB = ~1 billion bytes

1 TeraByte = 2^40 bytes = 1024 GB = ~1 trillion bytes

1 PetaByte = 2^50 bytes = 1024 TB = ~1000 trillion bytes

1 ExaByte = 2^60 bytes = 1024 PB = ~ 1 quintillion bytes

3


To buy or to upgrade l.jpg
To Buy or To Upgrade?

  • Things to consider:

    • Moore’s Law

    • Cost of upgrading vs. buying

    • Time installing software and files

    • Needs and wants


The cpu processing digital information l.jpg
The CPU: Processing Digital Information

  • The CPU is the brain of the computer

  • Different types of CPUs

    • Intel and AMD chips: Used in Windows-based PCs

    • Apple systems use different CPU design

  • Differentiating CPUs

    • Processing power

    • Clock speed

    • Electricity needed


Evaluating the cpu l.jpg
Evaluating the CPU

  • What can you do to the CPU to improve performance?

    • System Clock Speed:

      • MHz

      • GHz


How busy is your cpu l.jpg
How busy is your CPU?

  • Windows

    • Task Manager

      • Performance tab


Upgrading the cpu l.jpg
Upgrading the CPU

  • Expensive

  • Easy to install (ZIF socket)

  • Motherboard compatibility


Today s microprocessors l.jpg
Today’s Microprocessors

  • The more powerful a CPU is, the more circuitry is needed to make the CPU work

  • Such a large amount of circuitry in such a small, concentrated area generates A LOT of heat!!!

  • Most modern processors require heat sinks and/or fans to keep their temperature in a safe range

  • Keep your computer in cool, clean area, vacuum it out once in a while, don’t block ventilation vents


Evaluating other features l.jpg
Evaluating Other Features

  • CPU speed is not the only factor in your computer's performance

    • Amount of RAM

    • Hard drive speed and size

    • Speed of video card

    • Speed of Internet connection


How much ram is needed l.jpg
How Much Ram is Needed?

  • All running processes need RAM

    including the operating system

  • PF Usage rate (virtual memory)

    • if high, need more real RAM

  • Look at Available Physical Memory to see how much real RAM you have


Adding ram l.jpg
Adding RAM

  • will increase system performance

  • Things to consider:

    • Type of RAM module

    • Amount of RAM:

      • Number of slots - Motherboard

      • Operating system - how much can it handle?

      • how many applications running at the same time?


Evaluating storage l.jpg
Evaluating Storage

  • Types of storage devices:

    • Hard drive

    • Floppy drive

    • CD/DVD

    • Flash memory

  • All are Nonvolatile storage


The hard disk drive l.jpg
The Hard Disk Drive

  • Storage capacity up to 500 GB

  • Access time is measured in milliseconds

  • Data transfer rate is measured in megabits or megabytes per second

  • Spindle speed is measured in thousands of revolutions per minute (rpm)

  • Subject to head crashes!


Hard disk controllers l.jpg
Hard Disk Controllers

  • controller = electronics that transfer instructions and data to and from the disk

  • EIDE, SCSI - older

  • SATA - newer, faster - 3 Gb/sec

    serial advanced technology attachment

  • drive must be compatible with controller on motherboard


Ram vs hard drive speeds l.jpg
RAM vs. Hard drive speeds

  • RAM speed is often expressed in nanoseconds (one billionth of a second)

    • Amount of time required to access data in RAM

  • Hard Drive speed is often measured in milliseconds (one thousandth of a second)

    • Amount of time required to access data on disk

  • Typical RAM is millions of times faster!


Cache memory l.jpg
Cache Memory

Small amount of memory located on the CPU chip or near it

Stores recent or frequently used instructions and data

Used for quick access by the CPU

Different levels of cache

Distance from CPU


Memory storage pyramid l.jpg
Memory / Storage Pyramid

  • Fastest data access at the top of the pyramid, slower as you go down

  • Most expensive at the top of the pyramid, cheaper as you go down

  • RAM / cache = "memory"


Portable storage l.jpg
Portable Storage

  • Gives the ability to move data from one computer to another

  • Types of portable storage devices:

    • Floppy disk:

      • Capacity 1.44 MB

    • CD-R, CD-RW, DVD-R, DVD-RW:

      • Capacity 700 MB to 9.4 GB

    • Flash drive and cards:

      • Capacity 256 MB to 32 GB


Optical storage l.jpg
Optical Storage

  • Optical media:

    • -ROM

    • -R

    • -RW

  • Laser beam

    • "Pits" scatter laser light

      equaling a 1

    • "Lands" (nonpitted area) reflects laser light equaling a 0


Different optical formats l.jpg
Different Optical Formats

  • CD vs. DVD

  • High Density DVD

  • Blu-Ray

    • named for color of laser used

    • most Blu-Ray readers can read other DVDs

    • higher capacity than HD DVD, 50 GB


Treatment of media l.jpg
Treatment of media

  • Floppies / Zip Disks / Hard drives

    • Watch out for magnets!

    • heat, contaminants

  • CDs/DVDs

    • scratches

    • heat, contaminants

  • Flash sticks

    • static electricity - keep cap on when not in use


Evaluating ports l.jpg
Evaluating Ports

  • Ports are used to connect peripheral devices to the computer

  • Things to consider:

    • Devices you want to use

    • Ports needed for the devices


Universal serial bus l.jpg
Universal serial bus

  • hot swapping

  • 1.1 and 2.0 versions 1.1 = 12 Mbits/s 2.0 = 480 Mbits/s

  • Powered vs. non-powered

  • can chain together

USB hub

USB Connector

USB Port


Firewire l.jpg
FireWire

  • High speed transfer of audio and video data (Apple created)

  • First version 400 Mbits/s, newer version 800 Mbits/s

  • Comparable with USB in speeds

FireWire Port

FireWire Connector


Types of ports l.jpg
Types of Ports

  • Ethernet

    • Transfer rates range from 10 Mbps to 100 Mbps; newest 1Gbps

    • connects computers to LAN or cable modem

    • created at Xerox PARC 1973-75

Ethernet jack

Ethernet Port


Slide28 l.jpg
IrDA

  • Uses infrared light waves

  • Transfer rate of 4 Mbps

  • being replaced by Bluetooth and Wi-Fi

  • useful where radio would cause interference

IrDA


Bluetooth l.jpg
Bluetooth

  • Radio waves send data over short distances

  • meant to replace cables, 1-2 Mbits/s

  • security risk of instant connection when within range

Bluetooth


Make a system more reliable l.jpg
Make a system more reliable

  • Clean out your Startup folder

  • Delete unnecessary files - Disk cleanup

  • Use anti-spyware and antivirus software

  • Use the disk defragmenter

  • Keep software updated

    • OS, browser, antivirus, device drivers

  • Keep your system cool and clean


Computers in the environment l.jpg
Computers in the Environment

  • Green Computing

    • Adopting policies which conserve and recycle resources as well as have minimal impact on the environment

      • Turn your computer off

      • Don’t put old computers in landfills

      • Donate old equipment

      • Recycle printer cartridges and paper

      • Buy "Green Star" equipment

      • Telecommute


Computers in the environment32 l.jpg
Computers in the Environment

  • Chip manufacture

    • Computer chips and CPUs are made of silicon

    • Intel "How chips are made"

    • Acids, powerful lasers, and hazardous chemicals are used to etch circuitry onto silicon wafers

    • Chip production takes place in a clean room to keep chips from being contaminated and to keep hazardous materials from escaping

    • Chip production is largely done by robots to keep from exposing humans to the hazards of the plant



ad