八皇后问题要求在一个８X８的棋盘上放上８个皇后，使得每一个皇后既攻击不到另外七个皇后，也不被另外七个皇后所攻击-Eight queens problem requirements put eight queens on a 8x8 board, making a queen both attack less than seven other Queen or seven Queen' s attack

8*8 汉字点阵显示,可以显示字符，数字或汉字-8*8 dot matrix LED display C51 code and Proteus simulation