The Computer That Saved Metropolis! An inserted 28-page Superman story to promote Radio Shack's TRS-80 computer. In his battle against the villainous Major Disaster, Superman is assisted by the TRS-80 computer whiz kids Shanna and Alec.
Story by Cary Bates
Artwork by Jim Starlin & Dick Giordano
NOTE: This story was also printed as a stand-alone comic (with a new cover, also dated July 1980) and given away at Radio Shack (there were 3 different printings of the free Radio Shack issue).