Di Gi Charat is the name of the cute mascot character for the Gamers stores.
(Gamers is a chain of stores that sell game and anime related goods.)
Di Gi Charat became very popular, and many goods were created.
Then in 1999, a short TV series was created.
There was a second TV series in the summer of 2000, which consisted
of four 10 minute episdoes (aired over two days).
Then there were a few TV specials from time to time.
There was a Panyo Panyo Di Gi Charat TV series in 2002,
and the latest TV series is Di Gi Charat Nyo,
that began in April 2003 (and ended in April 2004).