编程，对输入的一串字符串进行统计，显示其中的数字个数、小写字母个数和大写字母个数。用十进制表示结果。（每种不超过99个）-Programming, to input a string of a string statistics, showed that of the digital number, lowercase number and the number of capital letters. In decimal representation results. (each not mo

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.