Software problem.
Assuming "Software" is one of the available answers.
Answer:
Eric A. Johnson
The first touchscreen was invented in 1965 by Eric A. Johnson who worked at the Royal Radar Establishment in Malvern, England. His first article, "Touch display—a novel input/output device for computers" describes his work and features a diagram of the design. 1982.
Gas giants DO have rings and satellites.
It's true.