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MCS-51单片机实用子程序库 （一） ＭＣＳ－５１定点运算子程序库及其使用说明 （二） ＭＣＳ－５１ 浮点运算子程序库及其使用说明(MCS-51 microcontroller practical subroutine library (1) MCS-51-point computation and use of the subroutine (2) MCS-51 floating-point operations and subroutine library use)

实现从打印机并口接收数据！并转换数据协议！通过CRC较验！发送出去！(Receive data from the printer parallel port! And convert the data protocol! CRC than experience! Send out!)

altera de1开发板 dma,pwm...实验源码(altera de1 development board dma, pwm ... experimental source)

TM7711 是应用于电子秤低频测量的单通道模拟前端。 该器件可以接受直接来自传感器的低电平的 输入信号，然后产生串行的数字输出。利用 Σ-Δ 转换技术实现了 24 位无丢失代码性能。通过选定的输 入信号被送到一个基于模拟调制器的增益可编程专用前端。 片内数字滤波器处理调制器的输出信号， 通 过通信口发命令可调节滤波器的截止点和输出更新速率，从而对数字滤波器的第一个陷波进行编程。 TM7711 只需 2.6~5.5V 单电源供电。TM7711 是全差分模拟输入，带有一个基准输入。 TM7711 是一款用于高精度电子秤系统的理想产品，由于采用特殊的结构确保器件具有极低功耗， 并且内建有掉电模式以减少待机功耗。该芯片还具有集成度高、响应速度快、抗干扰强等优点，可以大 大降低电子秤系统的整机成本，提高整机系统的性能和可靠性。(TM7711 is used in electronic scales measuring the low-frequency single-channel analog front-end. The device can accept a low level directly the sensor Input signal, and then generates a serial digital output. Use Σ-Δ converter technology to achieve 24-bit no missing code performance. Via the selected output The signal is fed to an analog modulator based on a dedicated front-end programmable gain. Chip digital filter processing modulator output signal through Send commands over the communication port can adjust the filter cutoff and output update rate, and thus the first notch digital filter can be programmed. TM7711 only 2.6 ~ 5.5V single power supply. TM7711 is a fully differential analog input with a reference input. TM7711 is an ideal product for high-precision electronic scale systems, the use of a special structure to ensure that the device has a very low power consumption, And built-in power-down mode to reduce standby power consumption. The chip also features high integra)

基于示波法的电子血压计程序，包括脉搏测量。控制器采用STM32F103C8T6。包含数据核心算法程序。( Based oscillography electronic sphygmomanometer procedures, including pulse measurements. Controller uses STM32F103C8T6. It contains data core algorithm program.)

1. 本研究利用 PCA 对可见-近红外（450～1 000 nm）、可见光（450～780 nm）和近红外（780～1 000 nm）光谱区域的苹果高光谱图像数据进行降维，获得 PC 图像，通过对 PC 图像进行分析，确定可用于分割损伤和正常区域的有效光谱区域，对比分析几个光谱区域的 PCA 的效果。(but currently no practical system for detecting blood spots and dirt stains exists. In order to obtain maximum throughput, processing speeds of over 85,000 eggs per hour are common. The demanding requirements placed on the human workers result in two types of grading errors)

说明：  TLC5615产生各种波形，dac处理芯片，精度为十位的DAC，产生方波 正弦波 三角波等(TLC5615Produce various waveform形)

永磁同步电机直接转矩控制系统，模糊PID控制程序，包含M文件(Permanent magnet synchronous motor direct torque control system)

mq135 sesnor used with arduino nd esp8266 for iot to transmitt data in wireless

使用IO口模拟I2C时序，包括主机、从机时序。(Using IO port simulation I2C timing, including the host, the machine timing.)