The ASCC was built from switches, relays, rotating shafts, and clutches. It used 765,000 electromechanical components and hundreds of miles of wire, comprising a volume of – in length, in height, and deep. It weighed about . The basic calculating units had to be synchronized and powered mechanically, so they were operated by a drive shaft coupled to a electric motor, which served as the main power source and system clock. From the IBM Archives:
