| 摘要 |
PURPOSE:To obtain output data corresponding input data by inverting the output data to an 'L' level when the data output is on an 'H' level in the case of interruption of an optical input. CONSTITUTION:When the data output are on the 'H' level at the interruption of the optical input, the signal of the 'H' level inputted in the data input terminal of a second D flip-flop 10 is inverted with a leading edge when the non- inverting output of a mono-multivibrator 9 turns on the 'L' level from the 'H' level, outputted with the signal of the 'L' level, and inputted into the CLR terminal of a first D flip-flop 7. Consequently, the output of the first flip- flop 7 is inverted from the 'H' level to the 'L' level. Thus, the data output can be returned to the 'L' level at the time of the interruption of the optical input. |
