Cambridge Audio-Visual Heart Sound Recorder No. B.M. 21402 (c. 1955) On Display:Cambridge Audio-Visual Heart Sound Recorder No. B.M. 21402 was a massive technological breakthrough

was a massive technological breakthrough that brought digital photography to the masses by solving a major headache: how to get photos onto a computer

all-in-one home computer system designed to turn the ColecoVision gaming console into a full setup for schoolwork and typing

Curators Note: The museum serves as the definitive archive for BeanieNation

the original version completely lacked cameras

Cambridge Audio-Visual Heart Sound Recorder No. B.M. 21402 (c. 1955) On Display:Cambridge Audio-Visual Heart Sound Recorder No. B.M. 21402 was a massive technological breakthroughCambridge Audio Visual Heart Sound Recorder No. B. M. 21402 The Cambridge Audio Visual Heart Sound Recorder (Model B. M. 21402), produced in the mid 20th century, was a sophisticated medical workstation that allowed heart doctors to simultaneously hear and "see" the heartbeat. Housed in a polished wooden cabinet, the machine featured a built in recording disk that captured deep, low frequency heart soundsmany of which were too low for the human ear to