| 摘要 |
PURPOSE:To obtain a combinational circuit of a signal waveform by providing a gate means, in which the graph data of a second data holding means are taken into a first data holding means as indication data every time the time set by a timer passes. CONSTITUTION:When '1' is written to the 1a and 1c of a flag register 1, there is a gate 3 controlled by an overflow signal 20 from a timer 2 between the flag register 1 and a register 10, and '1' set to the flag register 1 is transferred to the 10a and 10c of the register 10 every time the signal is input. The 7a and 7c of a gate 7 between the signal source of an output and the output 8 are opened in response to values and a waveform is output and synchronized with the overflow signal 20, and the waveform of the signal source of an output set by the flag register 1 is output selectively. A counter 9 conducts up-count or down-count and transmits data input to a D/A conversion signal 5, and the D/A conversion signal 5 successively conversion data from the counter 9 into the waveforms of signals and outputs the waveforms. |
