| 摘要 |
PURPOSE:To cope with the change in constitution easily and to attain sufficient security of secret, by providing a memory possible for READ/WRITE of non- volatile property for each terminal device and controlling a terminal device based on written control information. CONSTITUTION:Terminal devices 13 and 14 ar connected with an electronic computer main body 11 via a public communication line 12. The terminal devices 13 and 14 consist of communication adaptors 21 and 31, high speed lines 22 and 32, line branching filters 23 and 33, and a pluraity of work stations 24, 25 and 34, 35. The communication adaptor 21 incorporates a non-volatile memory 41 possible for READ/WRITE and the communication adaptor 31 incorporates a non-volatile memory 51. |
