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Compact disk.pptx
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- 2. Compact Disc CDsor Compact Disks are optic readable media. CDs are the replacement of the phonograph disc. • The main material of the CD is plastic. • The shape of the plastic is circular and one side of the circular plastic is coated with the reflecting metal coating, usually aluminum. • Data can be stored much more densely in optic media than in magnetic media, like Hard disk. Optic media have a much longer life span. Millions of bits are burned into this coating. 2
- 3. Compact Disc • CDscan store many types of data, like audio, video, games, any documents, etc. • The data are scanned by a laser beam with a CD driver to visualize the data. • The only thing that is less in CD is storage capacity is very less compared to HDD or DVD and the read-write speed is also very less. • The storage capacity of a CD is 700 MB only. PITCH DECK 6/15/XX 3
- 4. What is aCD used for in a computer? Compact discs store data to be retrieved or executed at a later date. CDs can store software programs to install onto your computer. They save files for backup or transfer to another computer and hold music to play in a CD player. PITCH DECK 6/15/XX 4
- 5. How much datadoes a CD hold? The standard CD can hold 72 minutes of music or 650 MB of data. An 80 minute CD is capable of holding 700 MB of data.. PITCH DECK 6/15/XX 5
- 6. How to useor run a CD? To use a CD on a computer, • Open the CD or DVD drive disc tray by pressing the drive's eject button. • Place the CD in the drive's disc tray face up and press the eject button again to close the disc tray. • Most computers autorun or auto play a CD, displaying a window with options to use the CD or play music on the CD. PITCH DECK 6/15/XX 6
- 7. How to useor run a CD? To use a CD on a computer, • If your computer's CD or DVD drive has a disk slot instead of a tray, • you need to insert the CD in the disc drive's slot. • Place the edge of the CD in the slot, and then gently push the CD into the drive slot a little bit. • The drive should grab the CD and pull it in the rest of the way. PITCH DECK 6/15/XX 7
- 8. How to useor run a CD? If your computer does not autorun or auto play the CD, Open File Explorer on a Windows computer or Finder on a Mac computer. Locate the disc drive and double-click the drive icon to view the CD's contents. PITCH DECK 6/15/XX 8
- 9. What came beforea CD? There were several types of storage media released before a CD. However, the most common storage media used before the introduction of the CD was the 3.5" floppy diskette. PITCH DECK 6/15/XX 9
- 10. How much datadoes a CD hold? The standard CD can hold 72 minutes of music or 650 MB of data. An 80 minute CD is capable of holding 700 MB of data.. PITCH DECK 6/15/XX 10
- 11. How much datadoes a CD hold? The standard CD can hold 72 minutes of music or 650 MB of data. An 80 minute CD is capable of holding 700 MB of data.. PITCH DECK 6/15/XX 11
- 12. PITCH DECK 6/15/XX Typesof Compact Disks There are three types of CDs available: • CD-R (Compact Disc – Recordable): This type of compact disc can be written only once and can not erased. • CD-ROM (Compact Disk-Read Only Memory): This disks are read once, after read it is use as a ROM, that is cannot be updated later. • CD-RW (Compact Disc-ReWritable): This type of compact disc can be written multiple times and can be erased also, like Pendrive. 12
- 13. 1. Cost ofCD is cheap. 2. It can be carried out easily. Its portable 3. It uses a laser to burn data into the disk, so that no noise in the data.. 4. In that time, an entire software package can be stored on one CD, so its very reliable for the software industries in the days. 5. In that days CD is only thing which has much storage upto 700 MB than other available storage devices. 6. CD provides random data access. 7. CD is durable for long time. 6/15/XX ADVANTAGES OF COMPACT
- 14. 1. Easy toscratch on CD. 2. Storage capacity is lower than a hard drive or DVD, nowadays CD is not used at all. 3. Read-write speed is slower. 4. To burn CD we need software, so burning is not much easy as hard disk or pen drive 6/15/XX DISADVANTAGES OF COMPACT
- 15. What came aftera CD? Several years after the CD was first introduced in the 1980s, there were other methods of storing and retrieving data. However, today's most common replacement for the CD is DVD and Blu-ray discs. For larger storage, jump drives are also a popular replacement for the CD. PITCH DECK 6/15/XX 15
- 16. How much datadoes a CD hold? The standard CD can hold 72 minutes of music or 650 MB of data. An 80 minute CD is capable of holding 700 MB of data.. PITCH DECK 6/15/XX 16
- 17. Handling and TakingCare of Your CD-ROM Disks Please observe the following precautions when handling CD-ROM disks: •DO NOT touch the data side of the disk (the side of the disk with no label). •DO NOT apply paper labels or write on any part of the disk, data side or label side. •If dust or fingerprints get on to the disk, wipe with a dry cloth from the center of the disk to the edge. •DO NOT place the disk in any place where it will be subjected to direct sunlight or high temperature. PITCH DECK 6/15/XX 17
- 18. Handling and TakingCare of Your CD-ROM Disks Caution Do not use Benzene: Paint Thinner Record Cleaner Static Repellent or any type of CD Lens cleaner. These chemicals can damage the surface of the CD-ROM disk. In addition, these fluids will build up on the lens cleaning brush in your CD-ROM reader, reducing effectiveness. PITCH DECK 6/15/XX 18
- 19. Safety Precautions • Thefollowing general safety precautions must be observed during all phases of operation, service and repair of this equipment. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture and intended use of the equipment. Sun Microsystems assumes no liability for the customer's failure to comply with these requirements. • The safety precautions listed below represent warnings of certain dangers of which Sun Microsystems is aware. You, as the user of the product, should note these warnings and all other safety precautions necessary for the safe operation of the equipment in your operating environment. PITCH DECK 6/15/XX 19
- 20. Safety Requirements For protection,observe the following safety precautions when setting up the equipment: •Follow all cautions, warnings and instructions marked on the equipment. •Ensure that the voltages and frequency rating of the power receptacle match the electrical rating label on the equipment. •Never push objects of any kind through openings in the equipment. They may touch dangerous voltage points or short components resulting in fire or electric shock. •Refer servicing of equipment to qualified personnel. PITCH DECK 6/15/XX 20
- 21. DO’S AND DOS DO •Handle discs by the outer edge or the center hole. • Use a non-solvent-based felt-tip permanent marker to mark the label side of the disc. • Keep dirt or other foreign matter from the disc. • Store discs upright (book style) in plastic cases specified for CDs and DVDs. • Return discs to storage cases immediately after use. • Leave discs in their packaging (or cases) to minimize the effects of environmental changes. • Open a recordable disc package only when you are ready to record data on that disc. • Store discs in a cool, dry, dark environment in which the air is clean. • Remove dirt, foreign material, fingerprints, smudges, and liquids by wiping with a clean cotton fabric in a straight line from the center of the disc toward the outer edge. • Use CD/DVD-cleaning detergent, isopropyl alcohol, or methanol to remove stubborn dirt or material. • Check the disc surface before recording.
- 22. DO’S AND DON’T DON’T •Touch the surface of the disc. • Bend the disc. • Use adhesive labels. • Store discs horizontally for a long time (years). • Open a recordable optical disc package if you are not ready to record. • Expose discs to extreme heat or high humidity. • Expose discs to extremely rapid temperature or humidity changes. • Expose recordable discs to prolonged sunlight or other sources of ultraviolet light. • Write or mark in the data area of the disc (the area the laser “reads”). • Clean by wiping in a direction going around the disc.
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