函数名: peekb 功 能: 检查存储单元 用 法: char peekb (int segment, unsigned offset); segment为段基地址，offset偏移地址。 程序例: #include #include #include int main(void) { int value = 0; printf("The current status of your keyboard is:\n"); value = peekb(0x0040, 0x0017); if (value & 1) printf("Right shift on\n"); else printf("Right shift off\n"); if (value & 2) printf("Left shift on\n"); else printf("Left shift off\n"); if (value & 4) printf("Control key on\n"); else printf("Control key off\n"); if (value & 8) printf("Alt key on\n"); else printf("Alt key off\n"); if (value & 16) printf("Scroll lock on\n"); else printf("Scroll lock off\n"); if (value & 32) printf("Num lock on\n"); else printf("Num lock off\n"); if (value & 64) printf("Caps lock on\n"); else printf("Caps lock off\n"); return 0; }