Marchant Desk Unit
Computers have played a crucial role within the nuclear industry for theoretical and design calculations, for data acquisition and handling and for control systems. The photo above shows the status of data acquisition and “computing” about 1950. L-R: J. Kuehner, A. Bromley, E. Almqvist. A. Bromley stated the following: "My research group in the Control Room for the Chalk River 4 MV Van de Graaff accelerator. All of the instrumentation was vacuum-tube based and behind us on the right was a 50-channel multi-channel analyzer, each channel of which had to be separately adjusted at least once a day because the circuitry drifted continually. Our only local laboratory computer at the time was the Marchant desk unit shown here."
Photo source – AECL.