IBM PCjr. & IBM "Freeboard" Model 7257 (1984-1985) Models on Display:IBM Freeboard Model 7257 Conceived by legendary designer Gunpei

Conceived by legendary designer Gunpei Yokoi after he watched a bored businessman playing with a calculator on a bullet train

cleaning up its droppings

The Coleco Adam

Marketed as an essential tool for business executives

Despite this limitation and its notorious lack of a built-in DMA controller (which was often added via a memory upgrade)

IBM PCjr. & IBM "Freeboard" Model 7257 (1984-1985) Models on Display:IBM Freeboard Model 7257 Conceived by legendary designer GunpeiIBM PCjr. First Mass Produced Personal Computer with a Wireless Keyboard The IBM PCjr, announced in late 1983 and released in March 1984, remains one of the most famous cautionary tales in computing history. Code named "Peanut," the machine was IBM's attempt to bring the prestige of its business computer into the home and classroom, but it was intentionally crippled by design choices meant to keep it from eating into sales of the more expensive