| 摘要 |
PURPOSE:To form a controller with the simple hardware with no intervention of the software by adding a deciding means to the controller to decide the logical value of each bit according to a logic tree. CONSTITUTION:A controller 1 is connected to a ROM2 via an external address bus 4 and an external data bus 5 and delivers the state designating information which is decided unconditionally to the input information 101. While the information 102 sets the state of a controlled system (not shown in figure). A memory 3 holds the present state of the relevant system and delivers it as a past history as a storage circuit. The output of the memory 3 is fed back again as the information 101 on the controller 1 and use for decision of the information 12. Thus the correspondence is secured between the address storing the state designating information and the lowest position of a logic tree for logical value of each bit. As a result, the controller 1 can be formed with the hardware with no intervention of the software. |
