论文部分内容阅读
大多数使用SPO—256AL2单片机的语言处理电路都可以增加一个可编四程序的转折电平电路和人工音调控制电路,来代替具有电压控制振荡器的普通3.12MHz晶体时钟,如图所示。由于SPO—256AL2单片机有64个存储记忆位置,因此,只需6个地址数据线(D_0D_(?))。D_6和D_7线可以控制一个2比特的数/模转换器。其输出通过一个转折深度电位器来供给LS124片子的电压控制振荡器。这样可以有4个转折电平。音调范围由100K电位器所决定。
Most of the language processing circuits that use the SPO-256AL2 microcontroller can be replaced by a normal 3.12MHz crystal clock with a voltage controlled oscillator by adding a programmable four-turn level circuit and a manual tone control circuit as shown. Since the SPO-256AL2 has 64 memory locations, only 6 address data lines (D_0D_ (?)) Are required. The D_6 and D_7 lines control a 2-bit D / A converter. The output is supplied through a turn-depth potentiometer to the LS124’s voltage controlled oscillator. This can have 4 transition levels. The pitch range is determined by the 100K potentiometer.