Jeri Ellsworth (born 1974) is an American entrepreneur and autodidact computer chip designer and inventor. Currently the president of Technical Illusions, she became known in 2004 for creating a complete Commodore 64 system on a chip within a joystick, called C64 Direct-to-TV. That "computer in a joystick" could run 30 video games from the early 1980s and was a very popular Christmas gift, at peak selling over 70,000 units in a single day via the QVC shopping channel.