Since the mid 1960s, the digital computer has been used as a design tool by electronic circuit designers. Computer software programs called ECAP' and 2 SCEPTRE were among the earliest circuit analysis codes to gain general acceptance by the design community. These programs permitted circuit perfor- mance to be simulated for small-signal frequency responses, dc operation points, and transient responses to varying input stimulii. Unfortunately, accessability to programs such as these by the design community of that era was quite limited since they could be used solely on large, expensive...