| 摘要 |
PROBLEM TO BE SOLVED: To designate a plurality of control substrates connected like a tree to quickly rewrite control programs.SOLUTION: Control substrates A to E are connected to an electronic apparatus body 1. The control substrates A to E include communication units A3 to E9, memorys A7 to E5, and control units A15 to E11. The communication units A3 to E9 receive a download indication from the electronic apparatus body 1 to connect the control substrates A to E like a tree. Divided control programs are stored in the memorys A7 to E5. The control units A15 to E11 perform such control that divided control programs are stored in the memorys A7 to E5 if they are addressed to the control substrates A to E, and that control programs addressed to control substrates in a lower level are alternately transmitted per prescribed division unit if they are addressed to a plurality of control substrates at the same lower level. |
