32bit carry select adder
上传时间: 2014-12-02
上传用户:wanghui2438
This is 8bit multiplier VHDL code. It s consist of full adder, ripple carry adder(4bit, 8bit) multiplier 8bit, and test bench file. This is a unsigned type.
标签: adder 8bit multiplier consist
上传时间: 2014-08-21
上传用户:zhangliming420
implement a number of pattern-matching algorithms and to carry out an analysis of their operation
标签: pattern-matching algorithms implement operation
上传时间: 2013-12-05
上传用户:wuyuying
The CD4020BC, CD4060BC are 14-stage ripple carrybinary counters, and the CD4040BC is a 12-sta
上传时间: 2013-05-15
上传用户:ajaxmoon
·详细说明:双音多频的DTMF信号编码程序,产生DTMF信号进行编码。- The double sound multi- frequencies DTMF signal coded program, produces the DTMF signal to carry on the code.
上传时间: 2013-04-24
上传用户:yangzhiwei
分析了调幅信号和载波信号之间的相位差与调制信号的极性的对应关系,得出了相敏检波电路输出电压的极性与调制信号的极性有对应关系的结论。为了验证相敏检波电路的这一特性,给出3 个电路方案,分别选用理想元件和实际元件,采用Multisim 对其进行仿真实验,直观形象地演示了相敏检波电路的鉴相特性,是传统的实际操作实验所不可比拟的。关键词:相敏检波;鉴相特性;Multisim;电路仿真 Abstract : The corresponding relation between modulation signal polarity and difference phases of amplitudemodulated signal and the carrier signal ,the polarity of phase2sensitive detecting circuit output voltage and the polarity of modulation signal are correspondent . In order to verify this characteristic ,three elect ric circuit s plans are produced ,idea element s and actual element s are selected respectively. Using Multisim to carry on a simulation experiment ,and then demonst rating the phase detecting characteristic of the phase sensitive circuit vividly and directly. Which is t raditional practical experience cannot be com pared.Keywords :phase sensitive detection ;phase2detecting characteristic ;Multisim;circuit simulation
上传时间: 2013-11-23
上传用户:guanhuihong
单片机指令系统 3.1 MCS-51指令简介 3.2 指令系统 3.1 MCS-51指令简介 二、MCS-51系列单片机指令系统分类 按寻址方式分为以下七种:按功能分为以下四种: 1、立即立即寻址 1、数据传送指令位操 2、直接寻址 2、算术运算指令 3、寄存器寻址 3、逻辑运算指令 4、寄存器间接寻址指令 4、控制转移类指令 5、相对寻址 5、位操作指令 6、变址寻址 7、位寻址 三、寻址方式 3、寄存器间接寻址 MOV A, @R1 操作数是通过寄存器间接得到的。 4、立即寻址 MOV A, #40H 操作数在指令中直接给出。 5、基址寄存器加变址寄存器寻址 以DPTR或PC为基址寄存器,以A为变址寄存器, 以两者相加形成的16位地址为操作数的地址。 MOVC A, @A+DPTR MOVC A, @A+PC 四、指令中常用符号说明 Rn——当前寄存器区的8个工作寄存器R0~R7(n=0~7); Ri——当前寄存器区可作地址寄存器的2个工作寄存器R0和R1(i=0,1); direct——8位内部数据存储器单元的地址及特殊功能寄存器的地址; #data——表示8位常数(立即数); #datal6——表示16位常数; add 16——表示16位地址; addrll——表示11位地址; rel——8位带符号的地址偏移量; bit——表示位地址; @——间接寻址寄存器或基址寄存器的前缀; ( )——表示括号中单元的内容 (( ))——表示间接寻址的内容; 五、MCS-51指令简介 1. 以累加器A为目的操作数的指令 2. 以Rn为目的操作数的指令 3. 以直接地址为目的操作数的指令 4. 以寄存器间接地址为目的操作数指令 应用举例1 8段数码管显示 应用举例2 3.2 指令系统 2、堆栈操作指令 3. 累加器A与外部数据传输指令 4. 查表指令 MOVC A, @A+PC 例子: 5. 字节交换指令 6. 半字节交换指令 二、算术操作类指令 PSW寄存器 2. 带进位加法指令 3. 加1指令 4. 十进制调整指令 5. 带借位减法指令(Subtraction) 6. 减1指令(Decrease) 7. 乘法指令(Multiplication) 8. 除法指令(Division) 三、逻辑运算指令 1. 简单逻辑操作指令 2. 循环指令 带进位左循环指令(Rotate Accumulator Left through carry flag) 右循环指令(Rotate Accumulator Right) 带进位右循环指令(Rotate A Right with C) 3. 逻辑与指令 4. 逻辑或指令 5. 逻辑异或指令 四、控制转移类指令 1. 跳转指令 相对转移指令 SJMP rel PC←(PC)+2 PC←(PC)+rel 程序中标号与地址之间的关系 2. 条件转移指令 3. 比较不相等转移指令 4. 减 1 不为 0 转移指令 5. 调用子程序指令 7. 中断返回指令 五、位操作指令 1. 数据位传送指令 2. 位变量逻辑指令 3. 条件转移类指令
上传时间: 2013-10-27
上传用户:xuanjie
设计一种应用于某全地形ATV车载武器装置中的中控系统,该系统设计是以TMS320F2812型DSP为核心,采用模块化设计思想,对其硬件部分进行系统设计,能够完成对武器装置高低、回转方向的运动控制,实现静止或行进状态中对目标物的测距,自动瞄准以及按既定发射模式发射弹丸和各项安全性能检测等功能。通过编制相应的软件,对其进行系统调试,验证了该设计运行稳定。 Abstract: A central control system applied to an ATV vehicle weapons is designed. The system design is based on TMS320F2812 DSP as the core, uses modular design for its hardware parts. The central control system can complete the motion control of the level of weapons and equipment, rotation direction, to achieve a state of static or moving objects on the target ranging, auto-targeting and according to the established target and the projectile and the launch of the security performance testing and other functions. Through the development of appropriate software and to carry out system testing to verify the stability of this design and operation.
上传时间: 2013-11-02
上传用户:jshailingzzh
The SDI standards are the predominant standards for uncompressed digital videointerfaces in the broadcast studio and video production center. The first SDI standard,SD-SDI, allowed standard-definition digital video to be transported over the coaxial cableinfrastructure initially installed in studios to carry analog video. Next, HD-SDI wasto support high-definition video. Finally, dual link HD-SDI and 3G-SDIdoubled the bandwidth of HD-SDI to support 1080p (50 Hz and 60 Hz) and other videoformats requiring more bandwidth than HD-SDI provides.
上传时间: 2013-10-08
上传用户:yjj631
波长信号的解调是实现光纤光栅传感网络的关键,基于现有的光纤光栅传感器解调方法,提出一种基于FPGA的双匹配光纤光栅解调方法,此系统是一种高速率、高精度、低成本的解调系统,并且通过引入双匹配光栅有效地克服了双值问题同时扩大了检测范围。分析了光纤光栅的测温原理并给出了该方案软硬件设计,综合考虑系统的解调精度和FPGA的处理速度给出了基于拉格朗日的曲线拟合算法。 Abstract: Sensor is one of the most important application of the fiber grating. Wavelength signal demodulating is the key techniques to carry out fiber grating sensing network, based on several existing methods of fiber grating sensor demodulation inadequate, a two-match fiber grating demodulation method was presented. This system is a high-speed, high precision, low-cost demodulation system. And by introducing a two-match grating effectively overcomes the problem of double value while expands the scope of testing. This paper analyzes the principle of fiber Bragg grating temperature and gives the software and hardware design of the program. Considering the system of demodulation accuracy and processing speed of FPGA,this paper gives the curve fitting algorithm based on Lagrange.
上传时间: 2014-07-24
上传用户:caiguoqing