I remember part of a film or maybe TV movie where a boy or maybe a teenager is in a spaceship. I think I saw it on TV in the 1980s, so it's either a 1970s film/movie or from the early 1980s.
The ship has an intelligent computer. Somehow the computer becomes damaged or faulty. It can no longer properly function but it still tries to do as requested, so when a self destruct is commenced the computer counts down. However, due to the damage the numbers are not in a decreasing sequence. Instead, they are jumbled up.
Finally the computer announces zero and the ship explodes.
I think the computer had a female voice.
What was this film or TV movie called?