单片机最小系统,或者称为最小应用系统,是指用最少的元件组成的单片机可以工作的系统. 对51系列单片机来说,最小系统一般应该包括:单片机、晶振电路、复位电路、按键输入、显示输出等。 -Means the microcontroller system with a minimum of components composed of 51 series of microcontrollers, the minimum system should generally include: single-chip crystal oscillator circuit, reset circuit, the key input, display output.