键盘扫描程序，初学者可以拿过来借鉴一下，程序里有详细注释!...

1．熟悉硬件仿真工具KD30的使用。 2．修改样本程序 SAMP1a，使无论在计数或停止计数时，按 SW3 均对计数值清零，并停止计数。 3．编制一个秒表程序, 测试精度为0.1秒，按 SW1键启动计数，再按一次 SW1键停止计数。任何时候按 SW3 键停止计数，并对计数值清零。 4．按 SW1键后， 以 0.1 秒为单位开始计数，再按一次 SW1 键停止计数。若按 SW1 键时间超过2秒，则计数值清零，回到初始状态。-1. Familiar with the hardware simulation tool KD30 use. 2. Revised procedures SAMP1a samples, regardless of the count or counts at the end, according to SW3 numerical terms were right, reset, and stop counting. 3. Preparation of a stopwatch procedures, testing accuracy of 0.1 seconds, according to bond SW1 start counting, according to a key SW1 stopped counting. By SW3 any time to stop counting bond and reset the count. 4. By SW1 bond, after 0.1 seconds for start counting, according to a key SW1 stopped counting. If SW1 keys by the time more than two seconds, then reset the count and return to the initial state.

FREESCALE MCF52XX eTPU控制三相电机的程序-eTPU CODE

modbus mega16源程序 AVR的小朋友们请查收-modbus mega16 source AVR Please find the children

这里有武汉恒科 51 单片机仿真器附带的约 80 个 ASM 示例代码,初学 51 单片机汇编的可以有各种示例.-There, Wuhan Hengke 51 MCU emulator with about 80 ASM sample code, beginner 51 microcontroller There are various examples that can be compiled.

这不是源码，这是Protel99SE版本的 通用器件封装库，很多朋友在寻找-source, which is Protel99SE generic version of the device packaging for many friends in the search for

用单片机对24c02进行读写操作。简单易懂。适合初学者使用。-With the 24c02 microcontroller for read and write operations. Easy to understand. Suitable for beginners.

AT89C4051单片机的产品手册，详细地说明了AT89C4051单片机的各项性能指标、产品结构和工作原理。-AT89C4051 microcontroller product manuals, detailed description of the AT89C4051 MCU performance, product structure and working principle.

单片机模拟spi通讯，可用于对spi接口的存储器的读写访问-Single-chip simulation spi communication, can be used to spi interface to read and write memory access

MAX7219用于键盘控制和led控制的专用芯片，对于初学者有很大的帮助。-MAX7219 uses in the keyboard control and the led control special-purpose chip, has the very big help regarding the beginner.

工程师在用Keil开发程序时，在代码性能要求较高的场合，需要对代码段的执行时间作统计。比如在做LED显示屏软件扫描程序，或一些定时采集数据程序，如果在软件仿真的时候就能够清晰知道代码段的运行时间，那就可以对程序进行优化，或者插入汇编代码(asm)达到最高运行速度。 关键字:Keil DLL C语言 ASM 汇编-engineers in the development process with Keil, the code performance requirements higher occasions, need to block the execution time statistics. For example, in the software do LED scanning procedures, or some regular data collection procedures, If the software simulation time can understand clearly code of the running time, it can process optimization, or insert code compilation (asm2) to achieve maximum speed. Keywords : Keil DLL C language compilation ASM