An 8421 code for which the weighted sum of the four bits in each codeword is three greater than the decimal digit represented by that codeword. For example, 9 is represented by 1100, the weighted sum of which is
科学参考收录了60776条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。