| 摘要 |
PROBLEM TO BE SOLVED: To provide a presence/absence state confirmation system for making respective computer terminals judge the presence/absence state of an operator by the presence/absence of input without making the operator be especially conscious, transmit information to the other computer terminals and display a presence/absence state by the information received from the other computer terminals. SOLUTION: A CPU 2 counts the lapse of specified time by a timer 9 and judges whether or not the input from an input part 6 is present within the time. A presence packet for indicating presence is transmitted to the other computer terminals when the input is present and an absence packet for indicating absence is transmitted to the other computer terminals when the input is not present. In the meantime, in the case of receiving the presence packet or the absence packet from the other computer terminals, the data 5 of a storage part 3 are updated corresponding to the contents of the packet and the updated contents are displayed at a display part 7. |
