实现程控电压电流源的程序.在功能方面，要求通过单片机按键选择输出信号类型及要求的输出量，并在显示器件上指示信号类型及设定数值-Voltage controlled current source to achieve the process. In the function, called for the adoption of single-chip button and select the output signal of the type of output required and th

信号与系统试验代码 Signal and system test code(Signal and system experimental code Signal and the system test code)