| 摘要 |
PURPOSE:To prevent a fault due to misoperation in an electronic switchboard, by giving a pass word to each maintainer in response to the in work department and the level of expertness, and checking the pass work for an important command to control feed and execution of this command. CONSTITUTION:A main memory MM has a program part PRG which contains a prescribed pass word command program PWC in addition to a normal program. A pass word checking part PWK is added to a normal command analysis program CMDA. A certain maintainer applies the corresponding pass word ''AA'' by a pass word command PSW and through a typewriter at a maintenance department CTG1. A central processor recives the command PSW via a channel CH and then starts the program PWC to convert and discriminate the corresponding category (maintenance department) and expertness level V1 from a pass word table PW. Then the coincidence is detected with the category of the corresponding typewriter. In addition, an inspection is executed to decide whether or not a memory writing command, etc. can be permitted at its level. |
