4 of 13Image
The first Commodore computer built during Tramiel's tenure was called the PET 2001 or Personal Electronic Transactor and was released in 1977. According to the Commodore PET Alive fan site: it "was a fully integrated computer with the monitor, motherboard, keyboard and cassette drive all in one package" - a big advantage over the competition.
The first PET models had 4KB of RAM and a black-and-white screen of 40x25 character graphics. Later models featured 8KB RAM and 12-inch screens. It also had a chicklet keyboard.
PET's astounding early success was a big surprise to Commodore leading to major backorders soon after it was launched.