| 摘要 |
<p>A program controller having a number of sequencer units provided with input terminals and output terminals on side edges of the upper surface of a case, and a central processing unit (CPU) connected to one of the sequencer units, wherein width dimensions of cases encasing therein the sequencer units are sequentially differentiated through a width portion of the input terminal and output terminal, so that the sequencer units encased in the cases which are sequentially narrowed in width dimension may be laminated on the upper surface of the sequencer unit encased in the case having a wide dimension of width, and the CPU may be placed on and secured to the upper surface of the sequencer unit encased in the case having a suitable width dimension, and in either case, the input terminal and output terminal of the lower sequencer unit are not to be shielded by the bottom surface of the upper case.</p> |
