Portable
Portable communications devices refer to hand-held or wearable devices. For example, the Walkie Talkie is a device that is hand-held when in use, and wearable when not in use. Most walkie talkies have a belt clip or a housing, such as a leather holder, that allows them to be worn on a belt.
~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Portable telephones (cellular telephones) are also carried, or worn, on a belt, or in a pocket.
~ ~ ~ ~ ~ ~ ~ ~ ~ ~
More recently, portable devices have also become usable when worn. For example, most walkie talkies come with a VOX (Voice Operated Xmit) capability so that they will work hands-free, when used with a wearable microphone. Many telephones such as the Motorola Star Tac also feature an earpiece that allows the phone to be worn and used hands-free. The Star Tac was the first wearable cellular telephone, in the sense that it was the first that could be used while being worn.
~ ~ ~ ~ ~ ~ ~ ~ ~ ~
The word portable derives from the French word porter ("to wear", as in "pret a porter" = "ready to wear", but also "to carry").
~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Portable computers are computers that can be hand-held, used on a lap, or worn in a pocket, belt, or the like, such as Personal digital assistants (PDAs). PDAs are almost always worn (pocket or belt) when not in use, but more recently there has been a trend to having them be usable when worn (e.g. with eyeglass-based displays as well as electric seeing aids such as eyetap devices).
Related Topics:
Portable computer - Personal digital assistant - Eyetap
~ ~ ~ ~ ~ ~ ~ ~ ~ ~
The Portable class of device exists at one end of a continuum:
~ ~ ~ ~ ~ ~ ~ ~ ~ ~
- Portable: hand-held or wearable;
- Mobile: vehicular mounted (e.g. an automobile radiotelephone);
- Base station or desktop units: building-mounted.
~ Table of Content ~
| ► | Introduction |
| ► | See also |
~ What's Hot ~
~ Community ~
| ► | History Forum Come and discuss about History, Civilizations, Historical Events and Figures |
| ► | History Web-Ring A community of sites, blogs and forums dedicated to History. Do not hesitate to submit your site. |
and are licensed under the GNU Free Documentation License.
Lexicon - Privacy Policy - Spiritus-Temporis.com ©2005.