Talk:John Mauchly

message: Mauchly is pronounced MOCKly: there is no "ch" sound. Jfgrcar 04:41, 15 December 2005 (UTC)
thread_title: Pronunciation

message: According to articles in Wikipedia on Flip-flop (electronics) and William Eccles, the flip-flop circuit was invented and patented by Eccles and F.W. Jordan in 1919, not by Mauchly.  If there is evidence that Mauchly invented it at Ursinus College, it should be provided here.  (But Mauchly was at Ursinus from 1933 to 1941)
 
Mauchly never claimed he invented the flip-flop.  He was well aware of the Eccles-Jordan circuit.  He always claimed that it was the use of the flip-flop as a high-speed counter to count cosmic rays at Swarthmore that first inspired him to compute electronically.
--Zebbie 20:00, 10 January 2006 (UTC)
thread_title: Flip-flop circuit claim

message: In his October 30, 1968 deposition in the Honeywell Inc. v. Sperry Rand Corp. case, Mauchly testified that he arrived at the concept of an electronic, general purpose computer while at Ursinus, and had discussed it with others, but could not recall the names of anyone to whom he had revealed this.  He was able to produce no evidence of an interest in digital circuits prior to June of 1941, when he visited Atanasoff and examined the Atanasoff–Berry Computer.
These quotes from the findings of Judge Larson (Oct. 19, 1973) in the ENIAC patent case constitute settled law:
*3.1.17 – Prior to his visit to Ames, Iowa, Mauchly had been broadly interested in electrical analog calculating devices, but had not conceived an automatic electronic digital computer.  
*3.1.18 – As a result of this visit, the discussions of Mauchly with Atanasoff and Berry, the demonstrations, and the review of the manuscript, Mauchly derived from the ABC "the invention of the automatic electronic digital computer" claimed in the ENIAC patent.   
This information can be found in Clark Mollenhoff's biography of Atanasoff.  Mollenhoff was both a Pulitzer prize winning journalist and a lawyer.
This is not to argue that Mauchly made no advances on the work of Atanasoff, only that his claims of originality and priority in attempting to patent ENIAC were false.  --Blainster 21:28, 24 August 2005 (UTC)
thread_title: ENIAC patent case

message: The calculations of the ABC were done with vacuum tube logic circuits, and thus were order of magnitude faster than electro-mechanical computers such as the much later Harvard Mark I.  It did have a rotating drum memory system, which limited it to 30 operations per second. The one second per operation that anonymous 141.158.42.148 refers to, was the printout speed per page, not the calculation speed.  --Blainster 00:14, 11 September 2005 (UTC)
thread_title: ABC computing speed

message: Another problem is the lack of any mention of Mauchly's loss of clearance/restraining order against his entering company property of the firm he co-owned.  Since this led rather directly to the failure of that firm, why isn't it included here, as it is on the entry for the Eckert-Mauchly Computer Corporation?   Drieux (talk) 00:03, 15 September 2008 (UTC)
thread_title: Loss of clearance during the Red Scare

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thread_title:  External links modified 

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thread_title:  External links modified 

message: Regarding the "First Draft", the article says "Goldstine, in a move that was to become controversial, removed any reference to Eckert or Mauchly and distributed the document to a number of von Neumann's associates across the country." I see this was challenged in point 2 of Joseph Grcar's  7 March 2007 comments, but was never addressed subsequently. I've added a cn tag for now. There is a big difference between neglecting to add credits in typing up someone else's notes and deliberately deleting them. I haven't found any such assertion elsewhere and am inclined to delete it unless a source is provided soon.--agr (talk) 21:08, 17 August 2023 (UTC)
thread_title:  "...removed any reference to Eckert or Mauchly"