摘要
传统加法器在处理多操作数累加时,必须进行多次循环相加操作。针对该问题设计5操作数并行加法器及其高速进位接口。电路采用多操作数并行本位相加和底层进位级联传递的方式,在一定程度上实现多操作数间的并行操作,减少相加次数。模拟结果验证了该加法器的设计合理性,证明其能缩短累加时间、提高运算效率。
Traditional adder must do several times of cyclic addition operation in processing of multi-operand accumlation. Aiming at this problem, this paper designs a five addend parallel adder and its high speed carry interface. Because the circuit uses parallel own department addition of multi-operands and bottom layer carry cascade connection transmission mode, the parallel operation between multi-operands is realized and addition times are reduced. Simulation results verify the design reasonability of the adder and prove that it can shorten addition time, enhance operation efficiency.
出处
《计算机工程》
CAS
CSCD
北大核心
2010年第1期251-252,259,共3页
Computer Engineering
基金
安徽省高校省级自然科学研究基金资助项目(2006KJ042B)
关键词
加法器
超前进位加法器
进位接口
adder
Carry Look-Ahead Adder(CLAA)
carry interface