| 摘要 |
<p>PURPOSE:To omit the backup of the microcomputer at every equipment at the time of no-operation of a system, and to reduce dark currents for the backup. CONSTITUTION:In a system constituted of plural equipments 2 and 3 having microcomputers 17 and 18, data stored in the RAM of the microcomputer of the other equipment are transmitted to an RAM 7 of the computer being a system main computer 1 before interrupting the power source of the other equipments, and the data stored in the RAM of the system main computer are returned to the RAM of the microcomputer of the pertinent other equipment after supplying the power source of the other equipment. A power source for backup is provided only at the system main computer, so that the dark currents at the time of the system no-operation can be remarkably reduced.</p> |
