| 摘要 |
A battery pack 1 for a mobile telephone (not shown) has battery cells 14 which also provide power to a torch lamp 136 and a voice record/playback unit 13 which are both built into the battery pack 1. A single chip vocal processor (IC1, Fig. 3) amplifies a signal from a microphone 134, converts the signal into digital form and stores it in a memory. Switches 131, 132, 133 respectively control recording, playback via a loudspeaker 135, and energisation of the torch lamp 136. <IMAGE> |
