That particular episode had more to do with hate/racism/speciesism than it did about any computer. It's one of the most highly regarded original series episodes. First instance of the 'auto destruct' sequence and it's the exact same auth codes they used in Star Trek III.
Now there IS an episode about what was called the 'M5 Computer' (Apple, are you listening?! We're at M4 now) that ended up taking control of the Enterprise and almost ended up destroying it and the crew because it was full of bugs. Also first time Mr. Daystrom is mentioned or seen (I think he got killed by the M5)