public link unit char {} = driver.char;
public link void OS_init(){} = driver.OS_init;
public link void OS_thread(){} = driver.OS_thread;
public link void 清空(){} = driver.clear;
public link void 在第_列显示字符_(bit n1,bit n3){} = driver.print_char;
public link void 显示第_个小数点(bit n1){} = driver.show_point;
public link void 隐藏第_个小数点(bit n1){} = driver.hide_point;
public link void 隐藏全部小数点(){} = driver.clear_point;
public link void 设置屏幕亮度为_(bit n1){} = driver.set_light;
