Description: 32位进位选择加法器,预置逻辑0和逻辑1,各模块并行运行,只要通过进位位选择逻辑0或者逻辑1即可,提高了运行速度。-32-bit carry select adder, preset logic 0 and logic 1, the modules run in parallel, as long as through the carry bit selection logic 0 or logic 1 can improve the speed. Platform: |
Size: 399360 |
Author:JTEven |
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Description: 因为二进制加法的进位只可能是1或0,所以可以将32位加法器分为8块(最低一块由4位先行进位加法器直接构成,其余加法结构都采用先行进位加法器结构)分别进行加法计算,除最低位以外的其他7块加法器结构各复制两份,进位输入分别预定为1和0。于是,8块加法器可以同时进行各自的加法运算,然后根据各自相邻低位加法运算结果产生的进位输出,选择正确的加法结果输出。-Because binary adder carry only be 1 or 0, so it can be 32-bit adder is divided into eight (minimum one by the four carry-lookahead adder directly constitute the remaining adder structures using carry-lookahead adder structure), respectively Addition calculation, in addition to other than the lowest seven two copies of each adder structure, carry input is scheduled for 1 and 0, respectively. Thus, the adder 8 can be performed simultaneously the respective adder, and then the respective adjacent low addition result generated carry bit output, select the correct output of the addition result. Platform: |
Size: 2048 |
Author:Peter |
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