That is NOT "Holly". [/pedant]

Holly was the male computer, they renamed to Hilly didn't they?

I always thought it was the female one then male but just heard it was the male one, female then male again. Learn something every day!

Three million years in the future, Dave Lister, the last human
being alive, discovers he is pregnant after a liaison with his
female self in a parallel universe. His pregnancy concludes with
the successful delivery of twin boys, Jim and Bexley. However,
because the boys were conceived in another universe, with
different physical laws, they suffer from highly accelerated
growth rates and are both eighteen years old within three days of
being born. In order to save their lives, Lister returns them to
the universe of their origin, where they are reunited with their
father (a woman), and are able to lead comparatively normal
lives. Well, as normal as you can be if you've been born in a
parallel universe and your father's a woman and your mother's a
man and you're eighteen years old three days after your birth.
Shortly afterward, Kryten, the service mechanoid, who had left
the ship after being rescued from his own crashed vessel, the
Nova 5, is found in pieces after his space bike crashed into an
asteroid. Lister rebuilds the 'noid, but is unable to recapture
his former personality. Meanwhile, Holly, the increasingly
erratic computer, performs a head sex change operation on
himself. He bases his new face on Hilly, a female computer with
whom he'd once fallen madly in love.