并行加法器是一种数位电路，其可进行数字的加法计算。在现代的电脑中，加法器存在于算术逻辑单元（ALU）之中。 加法器可以用来表示各种数值，如：BCD、加三码，主要的加法器是以二进制作运算。-Parallel adder is a digital circuit, which can be calculated the number of addition. In the modern computer, adder exists in the arithmetic logic unit (ALU) into. Adder can be used to express a variety of values, such as: BCD, plus three yards, the major is based on a binary adder for computing.