Based on signdigit negabinary representation, the two step addition and one step subtraction of arbitrary length operands can be performed.
基于符号数字负二进制表达，提出了任意字长操作数的并行两步加法与一步减法。
2
The extra digit obliged the national debt clock near New York's Times Square to move its dollar sign to make room.
位于纽约时代广场的国债钟也不得不挪掉美元符号，腾出空间来表达多出的数位。
3
This will cause scarcely a ripple in the market, given Nokia's single-digit share, but is another sign that Symbian's decline may be more abrupt than Nokia has hinted.