stm３２开发的键盘加显示，可以通过按键输入字母和数字，在1602上显示。-stm32 development plus the keyboard can be keys to enter letters and numbers displayed on the 1602.

压缩包中包含matlab，DSP例程，matlab是针对数值运算的例程，DSP例程是STM32 的四相双极性步进电机 和 矩阵键盘的 例程-Compression package contains matlab, DSP routines, matlab is routine for numerical computation, DSP routines STM32 four-phase bipolar stepper motors and matrix keyboard routines

实现DSP-STM32 上对四相双极性步进电机的调速控制，及STM32上矩阵键盘的使用-Realization of the four-phase bipolar stepper motor speed control on the DSP-STM32, STM32 and the use of the keyboard matrix