One Byte of ENIAC RAM (circa 1946)
Adam Rifkin stashed this in History of Tech!
Reddit comments 2015:
Reddit comments 2013:
For those unfamiliar with ENIAC:
Electronic Numerical Integrator And Computer was the first electronic general-purpose computer. It was Turing-complete, digital, and capable of being reprogrammed to solve a large class of numerical problems.
Thank you Adam! I did not know what an ENIAC was.
"six women who did most of the programming of ENIAC"
Women programmers were very popular in the 1940s:
ENIAC's six primary programmers, Kay McNulty, Betty Jennings, Betty Snyder, Marlyn Wescoff, Fran Bilas and Ruth Lichterman, not only determined how to input ENIAC programs, but also developed a deep understanding of ENIAC's inner workings. The programmers debugged problems by crawling inside the massive structure to find bad joints and bad tubes. Betty Jennings later recalled, "Since we knew both the application and the machine, we learned to diagnose troubles as well as, if not better than, the engineer."
They were following in the footsteps of Grace Hopper: https://en.wikipedia.org/wiki/Grace_Hopper