Paul Barina's first computer. Paul used three circuit boards, each with its own cpu. One cpu ran the UCSD interpreter, a second, the disk drive, and the third, the video display.
Pebeliths was a maze generator that had fields that influenced the generation process. John Providenza and I made hardcopies by exposing printing paper through a photographic enlarger with the light going backwards.
Grades collected grades and computed class rank for Karen's PSU computer science classes. By this time I'd found that I could not debug functions larger than a dozen lines on the 24x80 display. Fortunately Pascal offered nested definitions which I learned to use effectively whenever a routine got long.