| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide the portable device which is small in power consumption. SOLUTION: The thin type portable device has at least a main body having a lid which can be opened and closed, a microcomputer which is provided to the main body, a memory, an input means 3, a display device 2, and a solar battery module 6, and the solar battery module 6 is provided to the lid where power is generated with the lid closed. Consequently, a lightweight, compact book is actualized. Further, a recording data medium is lightweight and compact, so storage and transportation on a large scale are possible. Further, plural data storage media are available for one reproducing device, so the same effect with the possession of many books is obtained. Therefore, a schoolbody needs to go to school with not several heavy books, but only a few lightweight compact data files.</p> |
