Spectrum Software
Industrial Strength Simulation




Spectrum Software has released Micro-Cap 11, the eleventh generation of our SPICE circuit simulator.

For users of previous Micro-Cap versions, check out the new features available in the latest version. For those of you who are new to Micro-Cap, take our features tour to see what Micro-Cap has to offer.




Questions and Answers - Spring 2012


Question: Question: I am trying to install Micro-Cap 8 on a system that has Windows 7. Will it work? I haven't had much luck so far getting it installed.

Answer: Yes, Micro-Cap 8 will run on Windows 7 but you must so several things first.

1) Install MC8 from your original CD.

You only need to do this if the system is new and does not already have an MC8 installed.

We strongly recommend that you install MC8 in a non-write-protected directory like C:\MC8. Do not Install it in the Program Files folder because many Windows 7 installations write-protect the Program Files folder and MC8 must write to data files in the installation folder.

2) Download and install the newest Hasp driver (Haspdinst.exe.).

You can do that here:


Follow the instructions on the web page for installing Haspdinst.exe.

3) Try running MC8. If it runs you are finished. Otherwise you need to download the latest MC8 zip file.

To access the file you will need a user name and password which Spectrum Software will email to you when we receive an email request for the user name and password. Be sure to include your name and key ID number. Send email requests to


Uncompress the downloaded MC8.EXE to the MC8 folder overwriting the MC8.EXE file there.

Return to the main Newsletter page