Complex sentence: Jim Butterfield (14 February 1936 --) is a Toronto-based author and computer programmer famous for his work with Commodore microcomputers, and a longtime contributor to periodicals such as "The Transactor" and "TPUG".
Split into simpler sentences: Jim Butterfield (14 February 1936 --) is a Toronto-based author and computer programmer famous for his work with Commodore microcomputers. Longtime contributor to periodicals such as "The Transactor" and "TPUG".