This procedure for the RF transceiver procedures, using external interrupt pulse...

C8051F020的全面应用,包括两个UART口、SPI、I2C，所有I/O均用上。-C8051F020 comprehensive application, including two UART port, SPI, I2C, all I/O is used.

4*4键盘程序，来自msp430系列单片机-4* 4 keyboard procedures, from MCU Controller Series

P1口为数据口,控制线在P3部分端口,详见...C-C++flashled.rar - flashled演示,用keli c与protues仿真得到。,,C-C++下一页... -P1 population of population data, the Line of Control in P3 some ports, See ... C-C flashled.rar- flashled demonstration. and c with keli protues simulations. , And C-C Next ...

MCS-51单片机有5个中断源，其中两个是由-INT0、-INT1引脚输入的外部中断源；另外三个是内部中断源即由T0、T1的溢出引起中断和串行口发送完一个字节或接收到一个字节数据引起中断。触发外部中断有两种方式，即下降沿引起中断或低电平引起中断。当编程TCON中的ITi（i=0、1）为1时，则引起触发的方式为边沿触发方式，反之(ITi=0)为低电平触发方式。每个中断源的中断请求能否得到响应要受两级“开关”的控制，即一个总“开关”-MCS-51 single-chip has five interrupt sources, two of which are by-INT0,-INT1 pin input external interrupt source the other three internal interrupt sources from the T0, T1 overflow caused by the disruption and serial port sending or receiving end of a byte to a byte of data caused by interruption. Triggered external interrupt has two modes, namely, falling edge or low-level disruption caused disruption caused. When programming TCON in ITi (i = 0,1) for the 1:00 has been the subject of a way to trigger the way to the edge of the trigger, on the contrary (ITi = 0) for low-level trigger mode. Each interrupt source interrupt request can be subject to levels in response to

7281键盘显示程序，经过验证，可以直接使用-Keyboard display program 7281, after verification, can be directly used

FREESCALE 16位单片机片MC9S12DG128的键盘驱动程序,键盘缓冲区大小可设,支持按键的快加快减操作-SCM MC9S12DG128 keyboard driver, keyboard buffer size can be installed to support the button to accelerate quickly to reduce operating

93C46/66的读写程序，编译环境Uvision2，4线SPI接口的EEprom芯片的读写-93C46/66 literacy program, compile environment Uvision2, 4-wire SPI interface EEprom chip reader

1.将P1.0～P1.3接开关，将P1.4～P1.7接发光二极管。依据P1.0～P1.3开关状态控制P1.4~P1.7发光二极管点亮。 2.将P1.0～P1.7全部接发光二极管，开始P1.0、P1.5点亮，左循环50次后P1.1、P1.4点亮；右循环30次，循环往复。-1. P1.0- P1.3 will then switch to P1.4- P1.7 access LEDs. P1.0- P1.3 based on state control switch P1.4- P1.7 LED lights. 2. P1.0- P1.7 will take all LEDs started Schematic, P1.5 lit, the left circle after 50 P1.1 and P1.4 lit; Turn right circle 30 times repeated.

通过实验进一步了解和掌握单片机原理的基本概念、单片机应用系统的硬件设计及调试方法-Through experiments to further understand and grasp the basic concepts of SCM principles, microcontroller applications, the hardware design and debugging method

485通讯的底层驱动,完成485网络数据收发功能-The bottom of drive 485 to complete the network data transceiver function 485