| A | B |
|---|
| Business to consumer | B2C |
| Hard Disk | storage device that magnetically stores data, instructions & Info |
| Head Crash | When a read/write head touches a platter losing data |
| Cathode Ray Tube | CRT |
| Central Processing Unit | CPU |
| Kilobyte | K or KB approx 1000 memory locations |
| Gigabyte | GB (1 billion memory locations) |
| computer program or software | Instructions that tell computer what to do |
| Input Device | One of 6 primary components of a computer |
| processor (control unit & arithmetic/logic unit) | 1 of 6 primary computer components |
| Ubiquitous Computing | Ubicomp --computing devices integrated everywhere |
| Track | a narrow band that forms a full cirlce of the disk |
| Sectors | Small arcs of a pie-shaped section of storage |
| compact disc read-only memory | optical disc which you can read but not write on |
| compact disc-recordable | CD-R |
| compact disc-rewritable | CD-RW |
| 650 MB to 1 GB | CD-ROM typicall can store this much info |
| Digital Versatile Disk-read-only memory | DVD-ROM |
| 4.7 to 17 GB | DVD-ROM typically hold this much info |
| Flash memory cards | consist entirely of elctronics (no moving parts) |
