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时钟程序的编写 这是基于89系列 适用于初学者(clock based on 89C51 you can make a clock by yourself if you want )

矩阵按键测试程序, 输出结果用串口传输到上位机显示(Matrix key test program, the output with serial transmission to the PC)

C8051f500 Flash读写擦除操作(C8051f500 Flash read and write erase operation)

本项目是基于Cortex-M3 的地沟油快速检测装置，旨在实现“地沟油”快速，现场检测。MCU控制可编程的直接数字频率合成器（DDS）产生正弦激励信号，经过可变增益放大器（VGA）和低通滤波器（LPF）作用于食用油阻抗传感器（实验室制作）信号经过仪器放大器送入微控制器（MCU）的模数转化（ADC）通道，MCU对采集的信号通过快速傅里叶变换（DFT）处理，实现食用油阻抗与相角的检测；USB和以太网接口，可与计算机通讯，以便对采集的数据进行存储和分析。(The project is based on the Cortex-M3 waste oil rapid detection device designed to achieve " waste oil" rapid, on-site testing. MCU control programmable direct digital frequency synthesizer (DDS) generates sinusoidal excitation signal through a variable gain amplifier (VGA) and a low-pass filter (LPF) acting on the oil-impedance sensor (lab produced) to send signals through the instrumentation amplifier into the microcontroller (MCU) modulo conversion (ADC) channels, MCU signal acquisition via Fast Fourier Transform (DFT) processing, oil resistance and phase angle detection USB and Ethernet interfaces, and computer communication, in order to collect data for storage and analysis.)

① 设计进程控制块PCB表结构，分别适用于优先数调度算法和循环轮转调度算法。 ②建立进程就绪队列。对两种不同算法编制入队子程序。 ③编制两种进程调度算法：1）优先数调度；2）循环轮转调度 (① design process control block PCB table structure, respectively, for priority scheduling algorithm and round-robin scheduling algorithm. ② establish a process ready queue. Two different algorithms for the preparation of subroutine into the team. ③ preparing two kinds of process scheduling algorithm: 1) priority scheduling 2) round-robin scheduling)

tree operation made by using c++

RTX实时操作系统是应用于小型嵌入式多任务准并行操作系统实时性高系统性能好(RTX real-time operating system is applied to a small embedded multi task quasi parallel operating system with high real-time performance and good performance.)

说明：  51单片机用1602液晶显示串口接收到的数据(51 1602 MCU with LCD serial data received)

　Hittite公司以创新的设计使得其PLL产品性能优异，在相位噪声，杂散方面有着卓越表现，其芯片的高集成度使得外围电路简单，设计方便。所以随着电子技术的发展，对频率源的相位噪声性能要求越来越高，Hittite的低相位噪声PLL，在物理、天文、无线电通信、雷达、航空、航天以及精密计量、仪器、仪表等各种领域里都将大有用武之地。(The Hittite companies with innovative design makes the PLL excellent product performance, the phase noise, spurious aspects with excellence, its high integration chip makes the peripheral circuit is simple and easy design. So with the development of electronic technology, phase noise performance of frequency source is more and more high, the Hittite low phase noise PLL, in physics, astronomy, radio communication, radar, aviation, aerospace and precision measurement, instruments, meters and other fields will be great.)

0013、单片机C语言程序设计实训100例——基于8051+Proteus仿真(0013, Microcontroller C Programming Language Training 100 cases- based on 8051+ Proteus simulation)