A method of high speed carry in parallel addition. With this method, the carry skips the digits with partial sum of 9 ( for decimal addition ) or 1 ( for binary addition ).

• 并行加法中的一种高速进位法，在这种方法中，进位数跳过部分和为9(对十进制加法来说)或1(对二进制加法来说)的数位。