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Using Information Technology

Chapter 5Hardware--The CPU & Storage

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Hardware--The CPU & Storage How to Buy a Multimedia Computer System

Hardware--The CPU & Storage How to Buy a Multimedia Computer System

5.1 Microchips, Miniaturization, & Mobility

5.2 The System Unit

5.3 Secondary Storage

5.4 Future Developments in Processing & Storage

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Optical Disks: CDs & DVDsOptical Disks: CDs & DVDs

Optical disk - a removable disk on which data is written and read through the use of laser beams

Optical disk - a removable disk on which data is written and read through the use of laser beams

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Optical Disks: CDs & DVDsOptical Disks: CDs & DVDs

CD-ROM - read only. For pre-recorded text, graphics, and sound

CD-R - for recording on once

CD-RW - for rewriting many times

CD-ROM - read only. For pre-recorded text, graphics, and sound

CD-R - for recording on once

CD-RW - for rewriting many times

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Optical Disks: CDs & DVDsOptical Disks: CDs & DVDs

DVD-ROM - for reading only

DVD-R - for recording on once

For rewriting many times:

DVD-RWDVD-RAM DVD+RW

DVD-ROM - for reading only

DVD-R - for recording on once

For rewriting many times:

DVD-RWDVD-RAM DVD+RW

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Magnetic TapeMagnetic Tape

Magnetic tape - thin plastic tape coated with a substance that can be magnetized (for 1s) or left non-magnetized (for 0s)

Tape cartridges - modules resembling audio cassettes that contain tape in rectangular, plastic housings

Magnetic tape - thin plastic tape coated with a substance that can be magnetized (for 1s) or left non-magnetized (for 0s)

Tape cartridges - modules resembling audio cassettes that contain tape in rectangular, plastic housings

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Smart CardsSmart Cards

Smart card - looks like a credit card but contains a microprocessor embedded in the card

Optical card - plastic, laser-recordable, wallet-type card used with an optical-card reader

Smart card - looks like a credit card but contains a microprocessor embedded in the card

Optical card - plastic, laser-recordable, wallet-type card used with an optical-card reader

Smart card in use

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Flash Memory CardsFlash Memory Cards

Flash memory card - circuitry on credit-card-size PC card that can be inserted into slots connecting to the motherboard

Flash memory card - circuitry on credit-card-size PC card that can be inserted into slots connecting to the motherboard

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Online Secondary StorageOnline Secondary Storage

@Backup

Connected Online Backup

Personal Vault

SafeGuard Interactive

@Backup

Connected Online Backup

Personal Vault

SafeGuard Interactive

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5.4 Future Developments in Processing & Storage5.4 Future Developments in Processing & Storage

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Future Developments in ProcessingFuture Developments in Processing

DSP chips - processors for the post-PC eraNanotechnologyOptical computingDNA computingQuantum computingOther possibilities - molecular and dot computers

DSP chips - processors for the post-PC eraNanotechnologyOptical computingDNA computingQuantum computingOther possibilities - molecular and dot computers

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Future Developments in Secondary StorageFuture Developments in Secondary Storage

Higher-density disks

Molecular electronics - storage at the subatomic level

The age of “storewidth”

Higher-density disks

Molecular electronics - storage at the subatomic level

The age of “storewidth”

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Summary – pages 198 to 207Summary – pages 198 to 207

Secondary storage: optical disks, magnetic tape, smart cards and on-line storage Future developments in processing & storage: forthcoming developments affecting power and storage capacity

Secondary storage: optical disks, magnetic tape, smart cards and on-line storage Future developments in processing & storage: forthcoming developments affecting power and storage capacity