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 *
標簽： Description Demonstrate Interface Registers
上傳時間： 2013-12-28
上傳用戶：懶龍1988
ST7787 芯片的SPEC，比亞迪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.
上傳時間： 2016-09-22
上傳用戶：woshini123456
RSA算法是第一個能同時用于加密和數字簽名的算法，也易于理解和操作。RSA是被研究得最廣泛的公鑰算法，從提出到現在已近二十年，經歷了各種攻擊的考驗，逐漸為人們接受，普遍認為是目前最優秀的公鑰方案之一。RSA的安全性依賴于大數的因子分解，但并沒有從理論上證明破譯RSA的難度與大數分解難度等價。即RSA的重大缺陷是無法從理論上把握它的保密性能如何，而且密碼學界多數人士傾向于因子分解不是NPC問題。 RSA的缺點主要有：A)產生密鑰很麻煩，受到素數產生技術的限制，因而難以做到一次一密。B)分組長度太大，為保證安全性，n 至少也要 600 bits 以上，使運算代價很高，尤其是速度較慢，較對稱密碼算法慢幾個數量級；且隨著大數分解技術的發展，這個長度還在增加，不利于數據格式的標準化。目前，SET( Secure Electronic Transaction )協議中要求CA采用比特長的密鑰，其他實體使用比特的密鑰
上傳時間： 2014-10-13
上傳用戶：sz_hjbf
CRC碼產生器與校驗器程序 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
標簽： polynomial Features Executes clock
上傳時間： 2013-12-18
上傳用戶：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
標簽： convolutional simulating encoder encoded
上傳時間： 2013-12-21
上傳用戶：253189838
16點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.
上傳時間： 2013-12-20
上傳用戶：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.
標簽： Installation component capturing Purpose
上傳時間： 2016-12-13
上傳用戶：TF2015
選取windows系統自帶的ding.wav信號作為分析對象，在Matlab軟件平臺下，利用函數wavread對音頻信號進行采樣，記住采樣頻率和采樣點數，聽一下原始聲音sound(y, fs, bits)。 （2）音頻信號的頻譜分析，先畫出音頻信號的時域波形；然后對音頻號進行快速傅里葉變換fft(y,N)，N取32768，畫出信號的頻譜特性，加深對頻譜特性的理解。 （3）根據頻譜，反演時域特性，畫出時域波形。尋找幅值最大的兩個頻率，此頻率除以fft點數在乘以采樣頻率就是信號的主頻，即可合成信號的時域圖形，聽一下聲音。 （4）對原音頻信號進行1024點的分段付立業分析meshgrid （5）根據主要頻線合成音頻，并畫出時域圖形，試聽合成效果。 （6）采用線性插值（linspace）和傅立業反變換(fliplr, ifft)分別合成音頻，并畫出時域圖形，試聽效果。
上傳時間： 2013-12-16
上傳用戶：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
標簽： Telecommunication describes Standard detailed
上傳時間： 2013-12-12
上傳用戶：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?
標簽： structure compacted Booleans provides
上傳時間： 2014-01-15
上傳用戶：壞天使kk
