加法电路

Parallel adder is a digital circuit, which can be calculated the number of addition.

详细说明：并行加法器是一种数位电路，其可进行数字的加法计算。

We can use software to do most calculation but not use hardware. The most basic circuit doing calculation in the computer is binary adder. For example, we can use of addition to do subtracting, continuous adding to do multiplication, and continuous subtracting to do division.

在电脑的世界里，可以做任何数字系统且复杂的演算，但是大多数的演算都藉由软体来解决，而非用硬体直接进行各种演算，电脑的硬体或其他数位电路在做算术运算时，最基本的电路往往只有二进位加法器而已，至於减法可藉由补数的加法解决，乘法等於连续的加法，除法则是连续的减法，可见加法器在运算数位系统中的重要性。

This is a great return for a nominal addition of circuitry!

这是电路的有名无实的加法的巨大回归！

The elements in Galois field can be represented in several kinds of basis.In this paper,a Galois field elements are represented first by a polynomial basis.

在RS码的编译码电路中，主要涉及的基本运算电路单元是有限域的加法与乘法运算，其中对译码器性能影响较大的是乘法器的选择与设计。

Experiments on multiplier tree and adder tree expressions exhibit running time reduction of 83% to 99%, and 40% to 80% respectively.4. Arithmetic unit check with half adder graph technique: Binary Moment Diagram technique has been used in multiplier equivalence checking.

比如针对加法和乘法连续运算的表达式，算法从实现电路中提取变量顺序和结合顺序并加以利用，实验表明，在验证乘法连续运算的表达式时减少了83%～99%的时间，加法连续运算表达式的验证时间也可减少40%～89%。4。

The algorithm combines the recognition technique of different coding methods in multiplier, the extraction technique of half adder graph in addition circuit, and the recognition technique of half adder tree structure of partial product addition circuit. With the extracted information, the register transfer level synthesis engine can generate a gate netlist that is logically correct and structurally similar to the implementation.

该算法结合了乘法器的编码方式识别技术、加法电路的半加树提取技术和部分积加法电路的架构识别技术来提取乘法电路的实现结构，以此生成与实现电路结构相似且逻辑正确的网表。

For the partial products generation, the novel method of Booth encoding combined with partial products generating is put up, which can directly map the multiplicand and multiplicator to partition products without generating the BOOTH encoding results. For the optimization of Wallace tree adding, the series formulas of full-adder and 4-2 Compressor realization are introduced to guidance the selection. For the non-bias round, forwarding round disposal in Wallace tree method is brought forward to avoid the final multi-bit adder. Also, the idea of delay-oriented partition of the MAC frame is put up to achieve the perfect match with multi-pipeline DSP architecture.

提出了一种构建多模式算法最小并集的MAC通用结构思想与一种划分MAC通用结构以适应多流水级DSP处理器设计的通用MAC设计方法；对于BOOTH编码和部分积产生，提出了直接建立被乘数与部分积的多路选择映射关系的BOOTH编码和部分积联合产生方法；对于最优Wallace树型加法实现，提出了全加器和4-2 compressor电路实现Wallace树加法所需的关键加法路径级数公式以指导实现选择；对于无偏舍入处理，提出了在Wallace树处理舍入问题的舍入运算前置方法；提出了以时延为导向的MAC各部分单元组合与流水线匹配具体方法。

Through hardware, Detection circuit gets the reactive power size of real-time compensation and realizes the multiplication and addition oper

检测电路通过硬件实现乘法和加法运算，得到实时补偿的无功功率大小。

Through hardware, Detection circuit gets the reactive power size of real-time compensation and realizes the multiplication and addition operations.

检测电路通过硬件实现乘法和加法运算，得到实时补偿的无功功率大小。

A lot of excellent circuits can be quickly and easily designed by using of Multisim2001. This thesis designed digital answer bell, digital frequency meter, up-down-counter, adder- subtracter .

本文利用Multisim2001在数字电路方面的仿真能力，设计出了数字式抢答器、数字频率计、正序倒序计数器、个位数的加法减法器。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。