首先，是对IAR Embedded Workbench开发环境的了解与使用，包括硬件环境与软件环境两部分，学习了如何建立工程，如何编写程序，如何将程序下载到板子上并进行在线调试。然后练习了 MSP430 单片机基本时钟模块的原理及使用方法，主要是利用LFXT1CLK　　、XT2CLK 和DCOCLK 三个时钟源为ACLK（辅助时钟）MCLK（系统主时钟）SMLK（子系统时钟）提供时钟，实验结果可以用示波器来观察波形并进行频率的测量-First of all, understanding and use of IAR Embedded Workbench development environment, including the two parts of the hardware environment and software environment, learning how to create a project, how to program, how the program is downloaded to the board and in-circuit debugging. Then practice the principle and method of use of the basic clock module of the MSP430 microcontroller, is the use of the LFXT1CLK, XT2CLK DCOCLK three clock source for ACLK (auxiliary clock) the MCLK (master clock) SMLK (subsystem clock) clock, and experimental results with an oscilloscope to observe waveforms and frequency measurement