用于快速计算32位加法，共分5级锁存器，4个8位加法器(pipeline_adder it helps you to add 32 bits swiftly if you need more information,may call me by the website account,it's really helpful)

实现了四位快速加法器，并在此基础上实现了16位和32为快速加法器(Based on the implementation of four bit fast adder, 16 bit and 32-bit fast adders are realized)