circuit simulator . news 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 . prev next about spectrum spectrum software was founded in february of 1980 to provide software for personal computers . initially the company concentrated on providing software for apple ii systems . one of the earliest products was logic designer and simulator . released in june 1980 this product was the first integrated circuit editor and logic simulation system available for personal computers . more ... help search our newsletter issues which contain application notes for micro cap or view our frequently asked questions section for common questions that arise with micro cap use .