| 摘要 |
The device, allowing automatic dialling of memory-stored telephone numbers, is used in combination with a telephone handset. This device comprises, within a flat support (8, 9), at least one acoustic transducer (2) in the form of a small disc, operating at voice frequency. The assembly is slim and can be produced in particular in the form of a credit card. Application: personalised device for calling a computer server, for example in the banking field. <IMAGE> |
