MSP-FET430P140 Demo - USART0, SPI Interface to HC165/164 Shift Registers Description: Demonstrate USART0 in two-way SPI mode. Data are read from an HC165, and same data written back to the HC164. ACLK = n/a MCLK = SMCLK = default DCO = UCLK0 = DCO/2 * USART0 control bits are in different SFR s from other MSP430 s *
标签： Description Demonstrate Interface Registers
上传时间： 2013-12-28
上传用户：懒龙1988
ST7787 芯片的SPEC，比亚迪2.4inchLCM的SPEC。The ST7787 is a single-chip controller/driver for 262K-color, graphic type TFT-LCD. It consists of 720 source line and 320 gate line driving circuits. This chip is capable of connecting directly to an external microprocessor, and accepts Serial Peripheral Interface (SPI), 8-bits/9-bits/16-bits/18-bits parallel interface. Display data can be stored in the on-chip display data RAM of 240x320x18 bits. It can perform display data RAM read/write operation with no external operation clock to minimize power consumption. In addition, because of the integrated power supply circuits necessary to drive liquid crystal, it is possible to make a display system with the fewest components.
上传时间： 2016-09-22
上传用户：woshini123456
RSA算法是第一个能同时用于加密和数字签名的算法，也易于理解和操作。RSA是被研究得最广泛的公钥算法，从提出到现在已近二十年，经历了各种攻击的考验，逐渐为人们接受，普遍认为是目前最优秀的公钥方案之一。RSA的安全性依赖于大数的因子分解，但并没有从理论上证明破译RSA的难度与大数分解难度等价。即RSA的重大缺陷是无法从理论上把握它的保密性能如何，而且密码学界多数人士倾向于因子分解不是NPC问题。 RSA的缺点主要有：A)产生密钥很麻烦，受到素数产生技术的限制，因而难以做到一次一密。B)分组长度太大，为保证安全性，n 至少也要 600 bits 以上，使运算代价很高，尤其是速度较慢，较对称密码算法慢几个数量级；且随着大数分解技术的发展，这个长度还在增加，不利于数据格式的标准化。目前，SET( Secure Electronic Transaction )协议中要求CA采用比特长的密钥，其他实体使用比特的密钥
上传时间： 2014-10-13
上传用户：sz_hjbf
CRC码产生器与校验器程序 Features ： Executes in one clock cycle per data word Any polynomial from 4 to 32 bits Any data width from 1 to 256 bits Any initialization value Synchronous or asynchronous reset
标签： polynomial Features Executes clock
上传时间： 2013-12-18
上传用户：Ants
simulating a convolutional encoder allows the user to input a source code to be encoded and also input the values of the generator polynomials. It outputs the encoded data bits, where 1/n is the code rate
标签： convolutional simulating encoder encoded
上传时间： 2013-12-21
上传用户：253189838
16点FFT VHDL源程序，The xFFT16 fast Fourier transform (FFT) Core computes a 16-point complex FFT. The input data is a vector of 16 complex values represented as 16-bit 2’s complement numbers – 16-bits for each of the real and imaginary component of a datum.
上传时间： 2013-12-20
上传用户：yph853211
Purpose: --- -- This component is used for capturing staff from AVI to BMP. Installation: ------------- Extract the compiled units into your Lib directory or into another directory that is listed in the Library path in your Delphi options. Choose file AVIcap.dcu for register. description: ------------ AVIcap V2.0 used for capturing frame from AVI without drawing on the screen, that is essentially fast. It can be reached by using of avifil32.dll from MS Video For Windows. New property: number of bits per pixel of bitmap.Now you can save BMP using next formats: pf1bit, pf4bit, pf8bit, pf8bitGray, pf15bit, pf16bit, pf24bit, pf32bit, pfDevice. See example to detail.
标签： Installation component capturing Purpose
上传时间： 2016-12-13
上传用户：TF2015
选取windows系统自带的ding.wav信号作为分析对象，在Matlab软件平台下，利用函数wavread对音频信号进行采样，记住采样频率和采样点数，听一下原始声音sound(y, fs, bits)。 （2）音频信号的频谱分析，先画出音频信号的时域波形；然后对音频号进行快速傅里叶变换fft(y,N)，N取32768，画出信号的频谱特性，加深对频谱特性的理解。 （3）根据频谱，反演时域特性，画出时域波形。寻找幅值最大的两个频率，此频率除以fft点数在乘以采样频率就是信号的主频，即可合成信号的时域图形，听一下声音。 （4）对原音频信号进行1024点的分段付立业分析meshgrid （5）根据主要频线合成音频，并画出时域图形，试听合成效果。 （6）采用线性插值（linspace）和傅立业反变换(fliplr, ifft)分别合成音频，并画出时域图形，试听效果。
上传时间： 2013-12-16
上传用户：dengzb84
This Telecommunication Standard [TS] describes the detailed mapping from input blocks of 160 speech samples in 13-bit uniform PCM format to encoded blocks of 95, 103, 118, 134, 148, 159, 204, and 244 bits and from encoded blocks of 95, 103, 118, 134, 148, 159, 204, and 244 bits to output blocks of 160 reconstructed speech samples
标签： Telecommunication describes Standard detailed
上传时间： 2013-12-12
上传用户：cuibaigao
The Bit Array structure provides a compacted arrays of Booleans, with one bit for each Boolean value. A 0 [1] bit corresponds to the Boolean value false [true], respectively. We can look at a stream of bytes as a stream of bits each byte contains 8 bits, so any n bytes hold n*8 bits. And the operation to manipulate this stream or bits array is so easy, jut read or change the bits state or make any Boolean operation on the whole bits array, like 鈥楢ND鈥? 鈥極R鈥? or 鈥榅OR鈥?
标签： structure compacted Booleans provides
上传时间： 2014-01-15
上传用户：坏天使kk
