public link unit char {}
driver.char = char;
public link bit LockLow = driver.lock_low;
public link void OS_init(){} = driver.OS_init;
public link void Clear(){} = driver.clear;
public link void ClearLine(bit n1){} = driver.clear_line;
public link void ShowText(bit n1,bit n2,bit n3){} = driver.show_text;
public link void ShowNumber(bit n1,bit n2,bit n3){} = driver.show_number;
