Addend and the summand input, and digital and carry the output device is a halfadder.
加法器是产生数的和的装置。加数和被加数为输入，和数与进位为输出的装置为半加器。
2
A real time optical logic processor is presented, that can perform binary logic operations in parallel. Experimental result is given of the system as a halfadder.
本文提出了一种能实时完成二进制逻辑运算的光学并行处理系统，并给出了作为半加法器的实验结果。
3
It is called "half-adder" because it has only two inputs and does not provide for a carry input.