The LGP-30 made ingenious, economic use of the technology available in the mid-1950s.
Even the CPU registers were on the drum memory. The control panel displayed the register contents on a small oscilloscope - it showed the bits as they rolled by the read head!
Even the CPU registers were on the drum memory. The control panel displayed the register contents on a small oscilloscope - it showed the bits as they rolled by the read head!