Programmed Data Processor-1 (PDP-1)
Photo Credit: M.Hawksey
The PDP-1 was the first computer by DEC released initially in 1959 and formally accepted on April 1961. It was built based on TX-0, and it opened the door for other computing innovations such as video games, debugging, first text editor, and many others. The introduction of cathode ray tube monitor for display which facilitated all those as it enhanced the visual effect. It only needed one operator and dissipated less heat. Therefore, no air cooling was necessary. PDP-1 was used in MIT, the first developer of a video game, which also used it to play the first computer music as its memory capacity was large enough to store a couple of top music albums of that time.