| 摘要 |
PURPOSE:To attain matrix arithmetic processing with simple constitution by applying data inverting processing among matrix arithmetic processings at a digital data area and applying data addition processing at an analog data area. CONSTITUTION:Digital data is fed as it is to a fixed contact point 23a of a switch circuit 23 and a signal of inverted digital data is fed to the other fixed contact point 23b of the switch circuit 23. When a switching signal L/R is at an L level, the switch circuit 23 is changed over to the position of the fixed contact point 23a, and when the switching signal L/R is at an H level, the switch circuit 23 is changed over to the position of the fixed contact 23b, then the digital data and its inverted data are obtained alternately at an output terminal 31. Thus, the output signal at the output terminal 31 is separated into the digital data and its inverted data to apply D/A conversion and both of obtained analog data are added through resistors to attain the arithmetic of (L-R). |
