| 摘要 |
PURPOSE:To use a module for processing a data by a word without limiting it to the higher or the lower rank by making the titled device have a function for inverting and non-inverting the higher rank and the lower rank of a data bus in accordance with a selective switch. CONSTITUTION:When one closed one of switches SW1-SW4 has been selected, an inversion command signal is not outputted to a data bus inverting device 5, and when that of an opened state of the switches SW1-SW4 has been selected, the data bus inverting device 5 inverts the contents of a data bus, and outputs them as a normal data. That is to say, in accordance with a module to be attached and its position, the higher or the lower rank of the data bus can be determined freely by opening or closing the switch concerned among the switches SW1-SW4. Accordingly, such a failure as the module for processing the data must be specified to the higher rank or the lower rank is eliminated. |
