Seen in the foreground is one of the two printers
used in the NORC installation, each of which could print
18,000 characters a second. The printers, which recorded
data without interrupting the calculation, gave the
operator and researcher a complete picture of the progress
of the calculation and provided a permanent printed
record of the results for later study. A single operator,
seated to the left of the printer, could start and stop
the machine and modify the instruction program during
calculations.