Using Information Technology Chapter 5 Hardware—The CPU

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

2 Hardware--The CPU & Storage How to Buy a Multimedia Computer System Microchips, Miniaturization, & Mobility 5. 2 The System Unit 5. 3 Secondary Storage 5. 4 Future Developments in Processing & Storage Hardware--The CPU & Storage 5. 1 2

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

4 Optical Disks: CDs & DVDs CD-R - for recording on once CD-RW - for rewriting many times Hardware--The CPU & Storage CD-ROM - read only. For prerecorded text, graphics, and sound 4

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

6 Magnetic Tape cartridges modules resembling audio cassettes that contain tape in rectangular, plastic housings Hardware--The CPU & Storage Magnetic tape - thin plastic tape coated with a substance that can be magnetized (for 1 s) or left non-magnetized (for 0 s) 6

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

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

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

10 Hardware--The CPU & Storage 5. 4 Future Developments in Processing & Storage 10

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

12 Future Developments in Secondary Storage Molecular electronics - storage at the subatomic level The age of “storewidth” Hardware--The CPU & Storage Higher-density disks 12

13 Secondary storage: optical disks, magnetic tape, smart cards and on-line storage Future developments in processing & storage: forthcoming developments affecting power and storage capacity Hardware--The CPU & Storage Summary – pages 198 to 207 13