| 基于SD数表示的求和算法 |
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| 引用本文： | 何召兰,王竹萍.基于SD数表示的求和算法[J].信息技术,2002(7):10-11,14. |
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| 作者姓名： | 何召兰 王竹萍 |
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| 作者单位： | 哈尔滨理工大学,哈尔滨,150080 |
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| 摘 要： | 二进制加法器已广泛应用于数字系统，但传统的二进制数表示求和过程中产生的进位限制了运算速度。文中提出了一种以2为基数的SD（Singed-Digit)数表示的求和计算方法，并在此基础上应用可编程逻辑器件设计实现了SD加法器，简化了求和运算过程。实验证明，通过这种算法可得到高速加法器，以提高运算速度。
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| 关 键 词： | 求和算法 SD数表示 进位 SD加法器 二进制 |
| 文章编号： | 1009-2552(2002)07-0010-02 |
A Novel Signed-Digit Adder Using a Signed-Digit Representation |
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| HeShaolan,WangZhuping.A Novel Signed-Digit Adder Using a Signed-Digit Representation[J].Information Technology,2002(7):10-11,14. |
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| Authors: | HeShaolan WangZhuping |
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| Abstract: | Binary adder has been widely applying to kinds of digital control systems. However, in a conventional binary system, speed of arithmetic operations is limited by carry propagation. Thus, a novel addition arithmetic algorithm using radix-2 signed-digit(SD) number representation is presented. In this paper, a p-digit radix-2 SD number system is introduced to simplify the addition operation. The design and simulation results of some addition circuits show that high speed adders can be obtained by the presented algorithms. |
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| Keywords: | Signed-digit representation Carry propagation Signed-digit adder |
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