| 摘要 |
PURPOSE:To output data securely and rapidly by transmitting data having a greater number of bits than the number of bits of a data bus by means of an address having a greater number of bits than those of said data bus and outputting them from a CPU. CONSTITUTION:A 16-bit address bus for transmitting an address commanding signal from an 8-bit CPU11 is branched off to a RAM, a ROM, and an I/O port which are not shown in figure, while being connected to a 16-bit latch circuit 13. A latch enable signal C is inputted into this latch circuit 13 from the CPU11 while an addressing signal is being issued, and this addressing signal being transmitted through the address bus 12 is latched when said signal C is inputted. And, the output of this latch circuit 13 is converted to an analog signal through a 16-bit D-A convertor 14 and, then outputted to, e.g., an actuator for a sleeve, which is an injection quantity controlling member of an electronic governer. |
