“A Triode Vacuum Tube Scale-of-Two Circuit.” In Review of Scientific Instruments 9 (March, 1938), pp. 83-89.

Rubberstamp on front pastedown. Very good. The complete volume, bound in blue library buckram. Octavo. Item #8026

Binary counters, the forerunners of digital computer circuitry, were developed in the 1930s to count nuclear events detected by Geiger-Muller counters. This paper describes the development of the first counter built out of vacuum tubes, instead of thyratrons—tubes filled with mercury vapor. The vacuum-tube counter was approximately thirty times faster than previous counters based on thyratrons.

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