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Spectrum Software官网首页的新闻：
News:
Effective 7/4/2019, Spectrum Software is closed. Micro-Cap is now free.
Technical support will be available for at least 90 days via email at Support.
You can download the latest versions of Micro-Cap here: Download
You can choose either the executable program or the entire installation CD for MC10, MC11, and MC12. If you have an earlier version, download and use MC12. These new versions do not require the security key, so they make Micro-Cap free to the entire engineering community.Thank you for the honor and privilege of serving you for the last 39 years.
Spectrum Software
Micro-Cap具有强大的电路仿真设计能力，是声学行业（耳机、微扬等）做等效电路仿真非常普遍通用的软件。使用非常方便，功能强大，封装部件容易。可视化和求解用起来都很舒适。
Spectrum Software公司已经成立39年，已于2019年7月4日正式关闭。旗下Micro-Cap软件永久免费，Micro-Cap 5到Micro-Cap 12都全部免费使用。
官网地址：http://www.spectrum-soft.com/
Micro-Cap各版本下载地址：http://www.spectrum-soft.com/download/download.shtm
下面是我为了避免网站关闭后无法下载而收藏的Micro-Cap软件的各个版本及用户手册：