c. Major Components

Cost ---------- Original cost SDS 920 (16k mem., 96 interrupts) $147,000

15-kc mag. tape and controller 20,000 1 add'l. 15-kc tape 15,000 Magnetic drum memory 36,000 9 Spectrometer control stations 86,000 Off-line paper-tape pre. unit 5,000 ---------- TOTAL $309,000

Replacement: The major components of the MSCS cannot be replaced by new line units as they are no longer in production.