What is Persicom?
1.
A human-formed computer, created by the manga studio CLAMP in the manga Chobits. Persicoms few differences from humans on the outside, the main one being Earports on their heads so they can plug themselves into TVs.
Chi is a Chobit, a rare persicom.
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Random Words:
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During instant messaging when you are typing to someone and there is a little message at the bottom stating "so-and-so is entering ..