In order to use the DEC Alpha, you must first set up an account. Contact ITS Computer Consulting Center in Business 27 (Phone 319-273-5555) for an application.
To sign on, press until you get a list of computers. Choose 6 for the DEC Alpha (Acad). Then enter your username and password at the prompts.
If you are new to the DEC Alpha (Acad), you should read the document "Introduction to the DEC Alpha". It can be obtained from the Consulting Center.