1. programmable interrupt controller.

2. A graphics language by Brian Kernighan, for textually describing pictures with troff.

[Featured in "More Programming Pearls", Jon Bentley].

["PIC - A Language for Typesetting Graphics", B.W. Kernighan, Soft Prac & Exp 12(1):1-21 (Jan 1982)].

["PIC - A Graphics Language for Typesetting, Revised User Manual", Bell Labs TR 116, Dec 1984].

3. personal intelligent communicator.