Unit_04: Peripherals Flashcards
Device: Fixed hard disk R/W: ? Speed: ? Media Capacity: ? Media Removable: ? Cost/Mb: ?
Device: Fixed hard disk R/W fast Media Capacity: High to very High Media Removable: No Cost/Mb: Low
Device: Removable hard disk R/W: ? Speed: ? Media Capacity: ? Media Removable: ? Cost/Mb: ?
Removable hard disk R/W Medium to fast Capacity: High Removable: Yes Cost/Mb: Medium to high
Device: CD - ROM R/W: ? Speed: ? Media Capacity: ? Media Removable: ? Cost/Mb: ?
CD-ROM Read Only Medium Capa: Low Removable: Yes Cost: Low
Device: CD-/+RW R/W: ? Speed: ? Media Capacity: ? Media Removable: ? Cost/Mb: ?
CD-/+RW R/W Medium Capa: Low Yes Cost: Low
Device: DVD-ROM R/W: ? Speed: ? Media Capacity: ? Media Removable: ? Cost/Mb: ?
DVD-ROM Read only Med Capa: Med Yes CostL: Low
Device: DVD-/+RW R/W: ? Speed: ? Media Capacity: ? Media Removable: ? Cost/Mb: ?
DVD-/+RW R/W Med Capa: Med Yes Cost: Low
Device: Magnetic tape R/W: ? Speed: ? Media Capacity: ? Media Removable: ? Cost/Mb: ?
Magnetic tape R/W Slow to Med Capa: High to very High Yes Cost: Low
Device: Flash drive R/W: ? Speed: ? Media Capacity: ? Media Removable: ? Cost/Mb: ?
Flash drive R/W Med Capa: Low to Med Yes Cost: Med
Type: Ink-jet Speed: Text Quality: Graphics Capability: Color Quality: Cost:
Type: Ink-jet Speed: Med to fast Text Quality: Good to Excel Graphics Capability: Good to Excel Color Quality: Good to very good Cost: Low
Type: Laser Speed: Text Quality: Graphics Capability: Color Quality: Cost:
Type: Laser Speed: Med to very fast Text Quality: Excel Graphics Capability: Good to Excel Color Quality: Good in color laser printers Cost: Med to High
Type: Thermal Transfer Speed: Text Quality: Graphics Capability: Color Quality: Cost:
Type: Thermal Transfer Speed: Med to Fast Text Quality: Excel Graphics Capability: Good to Excel Color Quality: Good to Superior Cost: Med to High
Type: Solid Ink Speed: Text Quality: Graphics Capability: Color Quality: Cost:
Type: Solid Ink Speed: Med to Fast Text Quality: Excel Graphics Capability: Good to Excel Color Quality: Good Cost: Med to High
Type: Electro-static Speed: Text Quality: Graphics Capability: Color Quality: Cost:
Type: Electro-static Speed: Slow to Fast Text Quality: Fair to Good Graphics Capability: Fair to Good Color Quality: Fair to Good Cost: Low to High
What is Currie Munce’s main aim
Build bigger storage
How quickly areal density of hard disks increase 1990s
doubled every 18 months
How long magnetic recording technology continue to make rapid advances in capacity?
5-10 years (From March 200)
problem he predict for magnetic storage
A phenomenon called Superparamagnetism threatens to make density packed bits unstable
Predicted limit for discrete bit magnetic storage capacity
10 terabits per square inch (1 terabits = 1000 gigabits)
What storage technologies might replace current magnetic systems
Atomic force microscopy (AFM) and holographic storage
Advantage of holographic storage being three-dimensional ?
‘pages’ of data can be superimposed on a single volume
What improvements are predicted due to the fast access rates and transfer times of holographic storage ?
lead to improved network searches, video on demand, high-end servers, enterprise computing, and supercomputing
What is predicted to be the most important high capacity removable storage media in the next 10 years
CD-ROMs and DVDs
What method of software distribution is likely to replace optical disks ?
online delivery
Big Blue
IBM
Areal density
The data capacity of a storage device measured in bits per square inch
Moore’s law
Prediction that the number of transistors that can be incorporated into a processor chip will be doubled every 18 months
Superparamagnetism
A phenomenon that threatens to make densely packed bits unstable in magnetic storage devices
Terabit
1000 gigabits
AFM
Atomic force microscopy
Angstrom
The approx radius of an atom
Predicted maximum storage of density of AFM is 400 gigabits per square inch (TRUE/FALSE)
TRUE
First computer to use tape storage devices
Univac 1
