| 摘要 |
PURPOSE:To obtain a simple and inexpensive device by making a control program having a part of functions for generating a mark signal. CONSTITUTION:A mark signal generating device has input terminals A ''01'', A ''00'' of the first 2-bit signal, and input terminals B ''01'', B ''00'' of the second 2-bit signal. The 2-bit signals inputted to these input terminals are inputted to OR gates 501, 502 and AND gate 50, 53, and also outputs of the OR gates 501, 502 and the 2-bit signals A ''01'', B ''01'' are inputted to AND gates 51, 52. A mark signal is generated by switching a signal inputted to the input terminal, by a program control. |
