The IBM 650 Magnetic Drum Data Processing Machine was announced 2 July 1953 (as the "Magnetic Drum Calculator", or MDC), but not delivered until December 1954 (same time as the NORC).Principal designer: Frank Hamilton, who had also designed ASCC and SSEC.Two IBM 650s were installed at IBM Watson Scientific Computing Laboratory at Columbia University, 612 West 116th Street, beginning …