| A | B |
|---|
| bar-code reader | Reading tool that uses light to read universal product codes |
| CD-ROM | Compact disc–read only memory; an optical disc that can not be written to |
| CD-RW | Compact disc–rewritable; an optical disc that allows writing, erasing, and rewriting. |
| digitize | To convert information into a digital form that can be stored in the computer’s memor |
| dot matrix printer | Impact printer |
| flash memory | Type of erasable memory chip. |
| graphics tablet | Pressure-sensitive touch tablet used as a pointing device |
| keyboard | Input device |
| liquid crystal display (LCD) | Flat-panel display monitor |
| magnetic ink character reader | Reads numbers printed with magnetic ink on checks. |
| optical character recognition (OCR) | Uses laser beams to read and write bits of information on the surface of an optical disc |
| point-of-sale (POS) terminal | A device that automatically adjusts inventory in real-time. |
| random access | Storage method that allows information retrieval without regard to the order in which it was recorded. |
| repetitive-stress injuries | Injuries, such as carpal tunnel syndrome, caused by repeating the same movements over long periods of time. |
| sequential access | Storage method that requires the user to retrieve information by zipping through it in the order in which it was recorded. |
| solid-state storage | Storage with no moving parts. |
| tape drive | Storage device that uses magnetic tape to store information. |
| touch screen | Pointing device that responds when the user points to or touches different screen regions. |
| trackball | Pointing device that remains stationary while the user moves a protruding ball to control the pointer on the screen. |
| universal serial bus (USB) | Port which can transmit data at approximately 11 megabits per second |
