LPC单片机PWM程序

lcd1602的asm液晶点亮通用程序-asm of lcd1602 lit LCD common procedures

c8051f020的应用程序,主要为对ADC0的应用,使用其内置的温度传感器读取其片内温度值,并可以设置模拟输入口检测电压值-C8051F020 applications, mainly for ADC0 applications, using its built-in temperature sensor to read the chip temperature, and can set the analog input voltage value detection

protues64X16四个汉字点阵仿真-the four Chinese characters protues64X16 lattice simulation

汽车电子转速表电路，包括原理图和印制板图，使汽车电子的典型电路，值得学习-automotive electronic tachometer circuit, including schematic and PCB plans, the typical automobile electronic circuits, it is worth learning

MSP430的P2口接4*4键盘，通过中断方式实现串口通讯，通过PC端运行串口调试软件显示键号-MSP430 P2 I received 4* 4 keyboard, interrupted achieved through serial communications, PC terminal operations through serial debugging software, and display key,

凌阳最出的超声波测距模组，通过555产生40KHz的超声波，有SPE061A单片机控制超声波的发射和接收，最初的版本在程序方面比第二版本来得简单，主要是通过了硬件电路减少了程序，附电路图、PCB图等-Sunplus most of the ultrasonic ranging modules, 40KHz generated through 555 of the ultrasound, ultrasound has SPE061A single-chip microcomputer to control the transmitting and receiving an initial version of the procedure than the second version is more simple, mainly through the reduction of hardware circuit procedures, with schematics, PCB map

在做项目（工程）的时候，我们经常要用到比较多的按键，而且IO 资源紧张， 于是我们就想方设法地在别的模块中节省IO 口，好不容易挤出一两个IO 口，却 发现仍然不够用，实在没办法了就添加一个IC 来扫键。一个IC 虽然价格不高， 但对于大批量生产而且产品利润低的厂家来说，这是一笔不菲的开支! 那，我们能不能想到比较好的扫键方法：用最少的IO 口，扫最多的键？可以吗？-Doing the project (engineering), we often use the relatively large number of keys, and the IO resource constraints, so we are trying to save in another module IO ports, finally out of one or two IO ports, only to find is still not enough there is really no other way to add an IC to sweep on the keys. Although the price of an IC is not high, but low profits, high-volume production and product manufacturers, this is spending a lot of money! That, we can not think of a better scan key method: with a minimum of IO ports, scan Most of the keys? OK?

51定时中断例程，比较经典的说明了定时器的实际使用-51 timer interrupt routines, the more classical note of the actual usage timer

如何使用USB总线接口在单片机系统中实现一个虚拟串口的原理和实现过程。在设计中，软件部分采用USB的CDC类标准来实现虚拟串口，这样可以使用操作系统（Windows,Linux）自带的驱动程序；在硬件设计中，使用自带USB从设备接口的AT89C5131单片机，提高了系统的集成度和可靠性-How to use the USB bus interface in single-chip realization of a virtual serial port system, the principle and implementation process. In the design, the software part of the adoption of USB-CDC class standards to achieve a virtual serial port, so you can use the operating system (Windows, Linux) comes with the driver in hardware design, the use of own USB interface from the device chip AT89C5131 machine, to improve the system integration and reliability of

增加ASCII.C的一个ASCI码(7F),用于虚拟按键用 修改UART串口的命令解析程序，修改RTC的pcf8563中断部分。 精简IIC和smart_timer代码,添加define.h的宏定义。 修改system.c里的消息堆栈的宏定义 增加ii.c函数,支持对eeprom的打包 增加由PLD或者GPIO输出的模拟UART，在6个CLOCK下速度为57.6K 增加消息的优先级功能，消息类型的前4位为消息的优先级，后4位为消息的类型 试用于初学单片机并且想更上一层楼的，或者有些基础，想减少工作量的。-an increase ASCII.C the ASCI code (7F) for the virtual keys with serial UART to amend the order analytic procedures, the revised RTC pcf8563 interruption part. IIC and smart_timer streamline code, add the definition of Acer define.h. The revised system.c news stack macros increase II.c function, support for EEPROM packaged increase from the PLD or GPIO output analog UART, in the next six CLOCK speed of 57.6K news of the priority function of the type of information before news of the four priority levels after four types of information on the trial beginner to a higher level and SCM, or some foundation, we want to reduce the workload.