1. 1 1 Using Information Technology Chapter 5 Hardware--The CPU & Storage Chapter 5 Hardware--The CPU & Storage

2. 2 2 Hardware--The CPU & Storage How to Buy a Multimedia Computer System 5.1Microchips, Miniaturization, & Mobility 5.2The System Unit 5.3Secondary Storage 5.4Future Developments in Processing & Storage

3. Hardware--The CPU & Storage 3 3 Optical Disks: CDs & DVDs Optical disk - a removable disk on which data is written and read through the use of laser beams

4. Hardware--The CPU & Storage 4 4 Optical 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

5. Hardware--The CPU & Storage 5 5 Optical Disks: CDs & DVDs DVD-ROMDVD-ROM - for reading only DVD-R - for recording on once For rewriting many times: DVD-RW DVD-RAM DVD+RW DVD-ROMDVD-ROM - for reading only DVD-R - for recording on once For rewriting many times: DVD-RW DVD-RAM DVD+RW

6. Hardware--The CPU & Storage 6 6 Magnetic 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

7. Hardware--The CPU & Storage 7 7 Smart Cards Smart card - looks like a credit card but contains a microprocessor embedded in the card Optical cardOptical 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 cardOptical card - plastic, laser-recordable, wallet- type card used with an optical-card reader Smart card in use

8. Hardware--The CPU & Storage 8 8 Flash Memory Cards Flash memory card - circuitry on credit- card-size PC card that can be inserted into slots connecting to the motherboard

9. Hardware--The CPU & Storage 9 9 Online Secondary Storage @Backup Connected Online Backup Personal Vault SafeGuard Interactive @Backup Connected Online Backup Personal Vault SafeGuard Interactive

10. Hardware--The CPU & Storage 10 5.4 Future Developments in Processing & Storage

11. Hardware--The CPU & Storage 11 Future Developments in Processing DSP chips - processors for the post-PC era Nanotechnology Optical computing DNA computing Quantum computing Other possibilities - molecular and dot computers DSP chips - processors for the post-PC era Nanotechnology Optical computing DNA computing Quantum computing Other possibilities - molecular and dot computers

12. Hardware--The CPU & Storage 12 Future 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”

13. Hardware--The CPU & Storage 13 Summary – 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