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Don't know SATA . . .


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Do you know your SATA from your PCI? Just what is all that stuff in your tech devices? While we may only think about our keyboard, mouse and screen, there's so much more hardware inside your computer. The presentation will explain the acronyms, the terminology and how the hardware all works together.

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Don't know SATA . . .

  1. 1. Computer Hardware Jere MinichLake Sumter Computer Society 1
  2. 2. What we will Cover• 1. CPU – the heart of the Computer.• 2. Mouse and Flash Drives.• 3. Ram, Hard drive, Solid State Drives .• 4. DVD and Blu-Ray, Printers.• 5. Power Supplies, Keyboard and Monitors.• 6. Cables and Pixels.• 7. Wireless Systems. 2
  3. 3. Computers.• Two Types: – IBM Clone – Microsoft. – Mac - Apple.• Microsoft – Windows. refers to the way a computers processor handles – 32 Bit Computer – information. 64-bit version handles large amounts of – 64 Bit Computer - RAM more effectively than a 32-bit system. • completely backward compatible • this means your 64 bit computer can do math with larger numbers, • be more efficient with smaller numbers. 3
  4. 4. CPU- Central Processor Unit 4
  5. 5. Quad Core CPU – 4 CPU’s. 5
  6. 6. Each Core -1 instruction at a time. Cache -a special high-speed storage mechanism 6
  7. 7. CPU on Motherboard. CPU 7
  8. 8. Motherboard 8
  9. 9. Ball Mouse 9
  10. 10. Optical Mouse -InternalUse a White reflective surface for best results. 10
  11. 11. Advantageous to Optical Mouse• No moving parts means less wear and a lower chance of failure.• Theres no way for dirt to get inside the mouse and interfere with the tracking sensors.• Increased tracking resolution means smoother response.• They dont require a special surface, such as a mouse pad. 11
  12. 12. USB Flash DriveSome allow up to 100,000 write/erase cycles and 10 years shelf storage time. 12
  13. 13. RAM – Random Access Memory RAM are considered volatile, their state is lost or reset whenpower is removed from the system 13
  14. 14. “C” Hard Drive – Spinning Widget 14
  15. 15. Hard drives are classified as:– non-volatile, - retain the stored information even when power is off.– random access, - access information at any position in a sequence in equal time, independent of size.– digital, - data technology that uses discrete values, 1 and 0– magnetic, - the storage of data on a magnetized medium– data storage devices. - a device for recording (storing) information (data). 15
  16. 16. Solid State DriveNo Moving Parts, simple replacement for spinning widget, silent, faster, shock resistant 16
  17. 17. Hard Drive - Comparison 17
  18. 18. Blu-ray Disc Players• is an optical disc storage medium: – contain 25 GB per layer, – with dual layer discs (50 GB) being the norm for feature-length video discs. – Triple layer discs (100 GB) – quadruple layers (128 GB) are available for BD-XL re-writer drives.• The major application of Blu-ray Discs is as a medium for video material such as feature films• Blu-ray Disc - official release in June 2006.• The name Blu-ray Disc refers to: – the ‘blue laser’ used to read the disc, – which allows information to be stored at a greater density • than is possible with the longer-wavelength red laser used for DVDsNote : Disc = Optical Storage and Disk = Magnetic Storage 18
  19. 19. DVD versus Blu-RayA DVD uses a 650 nm red laserBlu-ray Disc uses a 405 nm "blue" laser diode.Note that even though the laser is called "blue", its color is actually in the violet range.• The smaller beam focuses more precisely: – thus enabling it to read information recorded in pits that are less than half the size of those on a DVD, – and can consequently be spaced more closely, – resulting in a shorter track pitch, – enabling a Blu-ray Disc to hold about five times the amount of information that can be stored on a DVD. 19
  20. 20. CD-DVD Player - InternalData Read/Write starts in near the center of the disk , works outward 20
  21. 21. Regions for the Blu-ray Disc standardRegions for the Blu-ray Disc standard:A/1: The Americas ,East Asia and Southeast Asia. B/2: Africa, Middle East, Southwest Asia, Europe , Australia, New Zealand. C/3: Central Asia, East Asia , South Asia, Eastern Europe.Blu-ray Disc players sold in a specific geographical region are designed to play onlydiscs authorized by the content provider for that region.This is intended to permit content providers (motion picture studios, etc.) the ability tosupport product differences in content, price, release date, etc., by region. 21
  22. 22. ‘Printer’ Circuit BoardControl circuitry - is built into the printer to control all the mechanical aspects of operation, as well as decode the 22 information sent to the printer from the computer.
  23. 23. ink-jet Printer• Sprays ink at a sheet of paper. – produce high-quality text and graphics.• Is any printer that places extremely small droplets of ink onto paper to create an image. – The dots are extremely small • between 50 and 60 microns in diameter, – so small that they are tinier than the diameter of a human hair • 70 microns• The dots are positioned very precisely, with resolutions of up to 1440x720 dots per inch (dpi).• The dots can have different colors combined together to create photo-quality images. 23
  24. 24. Printer - Heat vs. Vibration• Inkjet printers form their droplets of ink in different ways.• Thermal bubble - Canon , Hewlett Packard, referred to as bubble jet. = Heat – tiny resistors create heat, and this heat vaporizes ink to create a bubble. – As the bubble expands, some of the ink is pushed out of a nozzle onto the paper. – When the bubble "pops" (collapses), a vacuum is created. • This pulls more ink into the print head from the cartridge. – A typical bubble jet print head has 300 or 600 tiny nozzles, • all of them can fire a droplet simultaneously. 24
  25. 25. Piezoelectric Printer• - Epson -uses piezo crystals. = Vibration• A crystal is located at the back of the ink reservoir of each nozzle.• The crystal receives a tiny electric charge that causes it to vibrate.• When the crystal vibrates inward, it forces a tiny amount of ink out of the nozzle.• When it vibrates out, it pulls some more ink into the reservoir to replace the ink sprayed out. 25
  26. 26. Buying a Printer• Look for a Printer with 4 to 6 Cartridges.• Check the Specifications for: – Speed of Printing – Cost per page ; • Black & White versus Color – Cartridge replacement costs – Warranty • How long • What if. 26
  27. 27. Desktop Power Supply On- Off Switch Easily Replaced when it has failed. 115 Volts AC Input - 5-12 Volts DC Output 27
  28. 28. Laptop Power SupplyPower Cord 115 V AC Always use the OEM for your laptop. Not all the same. 28
  29. 29. Qwerty Keyboard –The U.S. keyboard has 101 keys, while the keyboards for other countries have 102 keys 29 most versatile device used for direct (human) input into computers. (HID)
  30. 30. Monitors• The monitor displays the computers user interface and open programs. – allowing the user to interact with the computer,.• Older computer monitors were built using: – cathode ray tubes (CRTs), • rather heavy • take up a lot of desk space.• Most modern monitors are built using LCD technology and are commonly referred to as: – flat screen displays. – thin monitors take up much less space 30
  31. 31. Monitor TypesFlat Screen Monitor Cathode Ray Tube (CRT) Two Types of Flat Screen Monitors. 1. DVI - better - higher quality - signal to stay in a digital form through its travels from the graphics card to the monitor. (Digital Visual Interface) 2. VGA - signals converted from digital form into analog, through the cable connecting to the monitor, then enters the monitor where it is converted back to digital. This allows for noise and data loss to occur. (Video Graphics Array) Screen Saver Not required for any Monitors. Screen Savers eat up RAM resources. 31
  32. 32. VGA Monitor Cable – - Video Graphics Array.ferrite cores. - ensure that the cable prevents image ghosting and is insusceptible to noise. 800 × 600 pixel resolution. (15 Pin HD)Male Female 32
  33. 33. DVIA video interface standard designed to provide very high visual quality on digital display devices such as: flat panel LCD computer displays digital projectors• It is partially compatible with the High- Definition Multimedia Interface (HDMI) standard 33
  34. 34. DVI Monitor Cables Digital Visual Interface 1920x1080 pixel resolution1920x1080 image2048x1536 image 34
  35. 35. DVI Types (Digital Visual Interface )• transmit uncompressed digital video and can be configured to support multiple modes such as: – DVI-D (digital only), – DVI-A (analog only), or – DVI-I (digital and analog). 35
  36. 36. USB Cables (Universal Serial Bus) Max 127 Devices. USB1,2,3. 4 Pin Cable Ends Symbol for USB ConnectionUSB - A USB-B 36
  37. 37. Ethernet Cable – Cat 5E (8 pin) 37
  38. 38. HDMI Cables (High-Definition Multimedia Interface) A/V Uncompressed Digital Data (19 pin) a compact audio/video cable for transferringencrypted uncompressed digital audio/video data from a HDMI-compliant device to a compatible digital audio device, computer monitor, video projector, and digital television. 38
  39. 39. Pixels• a pixel (or picture element) is a single point in a Screen displayed image. – the smallest addressable screen element; – the smallest unit of a picture that can be controlled.• Pixels are often represented using dots or squares.• The intensity of each pixel is variable.• A color is typically represented by three or four component intensities such as: – red, green, and blue, – cyan, magenta, yellow, and black. 39
  40. 40. Pixels - Displayed 40
  41. 41. Router – Wireless Router 41
  42. 42. Wireless Router w/3 Antenna Range- 2X 802.11G 230 ft. indoors; 820 ft. outdoors 42
  43. 43. Wireless Terminology• IEEE 802.11 is a set of standards carrying out wireless local area network (WLAN) computer communication: – a type of local area network that uses wireless technology – in the 2.4, 3.6 and 5 GHz frequency bands. – First 802.11b – 1999 – Second 802.11g – 2007 – Third 802.11n – 2009 – MIMO - • multiple-input and multiple-output, 43
  44. 44. MIMO- Up to four data streams simultaneouslya sequence of digitally encoded coherent signals used to transmit or receive information Routers provide a Hardware Firewall = Good 44
  45. 45. The End. 45