CSIRAC (Commonwealth Scientific and Industrial Research Automatic Computer) (en.wikipedia.org)
from tedu to techpics on 07 Aug 2023 02:55
https://azorius.net/g/techpics/p/8M3PXcCvYjz9z7G28B-CSIRAC-Commonwealth-Scientific-and-Industrial-Re

The machine was fairly representative of first-generation valve-driven computer designs. It used mercury acoustic delay lines as its primary data storage, with a typical capacity of 768 20-bit words, supplemented by a parallel disk-type device with a total 4096-word capacity and an access time of 10 milliseconds. Its memory clock ran at 1000 Hz, and the control unit, synchronized to the clock, took two cycles to execute an instruction (later the speed was doubled to one cycle per instruction).

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