| 摘要 |
<p>PROBLEM TO BE SOLVED: To display the state of a system which, consists of many modules by dividing modules for every channel and attaching an LED one by one to every channel. SOLUTION: In a system which consists of L pieces of modules and each module comprises M pieces of channels, the number of displayed system states is the number L of modules×the number M of channels, and LEDs 51 to 54 which are as many as the number M of channels are attached. A multiplexer 70 consists of multiplexers 71 to 74 which are as many as the number M of channels of each module, and each mutliplexer 71 to 74 selects one from among L modules through a LED module selection signal. A flip-flop 60 consists of flip-flops 61-1 to 61-L,...64-1 to 64-L which are as many the number L of modules which is equal to total channel numbers×the number of M of channels, and each flip-flop serves as memory that stores a display state of a LED 50.</p> |
