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Eniac, the First General-Purpose Digital Computer, Turns 80

spectrum.ieee.org

31–40 of 64 posts

Re: Eniac, the First General-Purpose Digital Computer, Turns 80

#31
My alma mater, Ursinus, is a very small school and has few claims to fame; but one of them is that John Mauchly taught there before going to Penn to design ENIAC. Wikipedia puts it bluntly:

> Mauchly's teaching career truly began in 1933 at Ursinus College where he was appointed head of the physics department, where he was, in fact, the only staff member.

Re: Eniac, the First General-Purpose Digital Computer, Turns 80

#32
Arguably, it was the second.

The Harvard Mark 1 ran its first program in 1944, but didn’t have branches as we understand them until 1946:

https://en.wikipedia.org/wiki/Harvard_Mark_I

Apparently, you could achieve loops by taping the input program into a physical loop, even in 1944.

Re: Eniac, the First General-Purpose Digital Computer, Turns 80

#33
post #27
post #7

ENIAC was very important but this article overstates its significance and ignores other (non US) machines to the point of historical inaccuracy. No mention of Z3 or Manchester Baby for example, the latter based on the von Neumann paper for example, was arguably a more accurate pointer towards how computer architecture would develop.

ENIAC was far more important for the general computing industry than other machines of its time. ENIAC led to EMCC (the first computer company) and UNIVAC. It was UNIVAC and IBM struggling against one another that created the entire industry.

IBM built the Harvard Mark 1 in 1944, before EMCC existed.

Re: Eniac, the First General-Purpose Digital Computer, Turns 80

#35
post #32

Arguably, it was the second. The Harvard Mark 1 ran its first program in 1944, but didn’t have branches as we understand them until 1946: https://en.wikipedia.org/wiki/Harvard_Mark_I Apparently, you could achieve loops by taping the input program into a physical loop, even in 1944.

Colossus Mark I beat them too:

https://en.wikipedia.org/wiki/Colossus_computer

Re: Eniac, the First General-Purpose Digital Computer, Turns 80

#36
ENIAC is where the profession of programming was born — and the first programmers were six women: Kay McNulty, Betty Jennings, Betty Snyder, Marlyn Meltzer, Frances Bilas, and Ruth Lichterman.

They had to program it by physically rewiring patch cables and flipping switches. There was no programming language, no stored program. The "software" was the hardware configuration itself.

It took another decade before FORTRAN (1957) gave programmers a way to write instructions in something resembling human language.

Re: Eniac, the First General-Purpose Digital Computer, Turns 80

#38
For a while I worked at what was then the Sperry Rand Corporation (now Unisys) which had some pride in their heritage as the descendant of the Univac Corporation founded by ENIAC inventors Eckert and Mauchly. In a glass case there was a vacuum tube circuit said to be a memory unit of the original ENIAC. No one seemed to know much about it, casting doubt on the claimed provenance of the device.

The tube circuit resembled the ones shown in the photo linked below (although none of those in the photo are from ENIAC).

https://en.wikipedia.org/wiki/File:Women_holding_parts_of_th...

Re: Eniac, the First General-Purpose Digital Computer, Turns 80

#40

ENIAC is where the profession of programming was born — and the first programmers were six women: Kay McNulty, Betty Jennings, Betty Snyder, Marlyn Meltzer, Frances Bilas, and Ruth Lichterman. They had to program it by physically rewiring patch cables and flipping switches. There was no programming language, no stored program. The "software" was the hardware configuration itself. It took another decade before FORTRAN…

Thank you for highlighting the contributions of women in computing, especially at it's inception! That is so easily forgotten or intentionally ignored in the age of the "tech bro"
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