The BINAC, or Binary Automatic Computer, was a serial binary computer with a 512-word acoustic mercury delay line memory divided into 16 channels each holding 32 words of 31 bits, with an additional 11-bit space between words to allow for circuit delays in switching. The clock rate was 4.25mh, which yielded a word time of about 10 microseconds. The actual instruction execution rate was dominated by the access time for instructions and data and would have averaged about 3000 to 4000 instructions per second, unless minimum latency programming was employed. Each BINAC word held two instructions. Each instruction had a fivebit operation code and a three octal digit address.

Articles on that refer to BINAC

The Age Intelligent Machines, Chapter Six: Electronic Roots By Ray Kurzweil
The Age of Spiritual Machines: Timeline By Ray Kurzweil
Chapter One: The Law of Time and Chaos By Ray Kurzweil
From ENIAC to Everyone By Alexander Randall 5th

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