Mark my words well, people of Metropolis... ...The Man of Steel's final hours are numbered now... ...and the reign of Major Disaster has just begun! And just in case you happen to be listening to this broadcast, Superman... I know you'll do everything in your power to try and stop me! And that's when the fun will really start! 
Superman in The Computers That Saved Metropolis is a one-shot with a cover date of July, 1980.
Synopsis for "The Computers that Saved Metropolis!"
Major Disaster uses synthesized Green Kryptonite Crystals to fog Superman's super brain, and launches three attacks on Metropolis. Luckily, with the aid of a microphone attached to his costume, schoolkids Shanna and Alec, pupils of Superman's old friend schoolteacher Ms. Wilson, are able to use their new TRS-80 computers to provide the Man of Steel with the super fast calculations he needs to be able to use his powers to thwart Major Disaster's disasters.
Appearing in "The Computers that Saved Metropolis!"
Featured Characters:
Supporting Characters:
- Lana Lang
- TRS-80 Computer Whiz Kids (First appearance)
- Shanna (First appearance)
- Alec (First appearance)
- Margaret Wilson (First appearance)
Antagonists:
Other Characters:
- Sixth Grade Students
- Timothy Yarrow
- Jason
- Karen
- William
- Metropolis Police Department
- Citizens of Metropolis
- Mom (Unnamed) (Single appearance)
- Cindy (Single appearance)
- Dad (Unnamed) (Single appearance)
- Mom (Unnamed) (Single appearance)
- Tommy (Single appearance)
- Stacey (Single appearance)
- Boyfriend (Unnamed) (Single appearance)
- NASA
- Astronauts (Flashback only)
- Computer Operators (Cameo) (Flashback only)
- John Bardeen (Cameo) (Flashback only)
- William Shockley (Cameo) (Flashback only)
- Walter Brattain (Cameo) (Flashback only)
- Computer Factory Workers (Unnamed) (Single appearance)
- WGBS Employees
- Cameraman (Unnamed) (Single appearance)
- Producer (Unnamed) (Single appearance)
Locations:
- 1945 (Mentioned only)
- 1948 (Mentioned only)
- Space
- Krypton (Mentioned only)
- Mars (Mentioned only)
- Jupiter
- Saturn
- The Moon (Flashback only)
- Earth
- Metropolis
- School (Unnamed) (outskirts of Metropolis)
- Sixth Grade Classroom
- Roof
- Major Disaster's Hideout
- 344 Clinton Street
- Clark Kent's Apartment
- Airport (Unnamed)
- Metropolis Resevoir (Destroyed)
- Metropolis Police Headquarters
- School (Unnamed) (outskirts of Metropolis)
- Nuclear Reactor (Unnamed) (north of Metropolis)
- Metropolis
Items:
- ENIAC (Unnamed) (Flashback only)
- Apollo Program
- Viking Program
- Voyager Program
- Radio Tubes
- Transistors
- TRS-80 Microcomputers
- BASIC
- Tornado
- Green Kryptonite (as Kryptonite crystals)
- Thunderstorm
- Flood
- Radioactive Gases
Vehicles:
- Challenger Lunar Module
- Sports Car
- Jetliner
Notes
- This is a promotional giveaway comic designed to promote Radio Shack's TRS-80 computers. In the process, Superman gives a history lesson on computer science.
- This story was also printed as an insert in Action Comics #509, House of Mystery #282, Legion of Super-Heroes (Volume 2) #265 and Superboy (Volume 2) #7.
- Followed by Superman in Victory by Computer and Superman in The Computer Masters of Metropolis.
- Due to the Kryptonite crystals it caused Superman to process data in his super-brain at a slower rate than a TRS-80.
- Alec, Shanna and Ms. Wilson next appeared in Superman #358, which refers to Superman's classroom visit in this story but does not mention TRS-80 products.
- The events of this story are also mentioned in Action Comics #522.