public link unit char {}
driver.char = char;
public link bit 固定数字低位 = driver.lock_low;
public link void OS_init(){} = driver.OS_init;
public link void 清空(){} = driver.clear;
public link void 清空第_行(bit n1){} = driver.clear_line;
public link void 在第_行第_列显示英文_(bit n1,bit n3,bit n5){} = driver.show_text;
public link void 在第_行第_列显示数字_(bit n1,bit n3,bit n5){} = driver.show_number;
