I'd be really curious to know how computer technology was aided by analyzing the wreckage of a crashed flying saucer. Were the aliens carrying an ultraviolet lithography plant on the craft or something?

Most the other major aspects of computer technology that I can think of were already in place long before the Roswell crash - the basic principles were worked out in the 1800s, the first transistor was built in the 1920s, the mathematical foundation was articulated in the 1930s, the first programmable machines were built around 1940 (with the first really workable one completed in 1941), ENIAC came along in 1945, and machines using the Von Neumann architecture came along by the end of the 1940s (but were designed by the time ENIAC came online).

So that leaves integrated circuits as the only major technological hurdle I can think of that wasn't tackled until after the Roswell incident. . . but that goes right back to the question at the start of my post. How would we have learned how to make them from the Roswell wreckage unless the ship was, for some unfathomable reason, carrying photolithography equipment?