mark ii computer bug

The outstanding success and backlog of jobs of the computer led the Navy to ask Aiken in early 1945 to design and construct a second such machine. The notion of bugs was described in other fields previously, but the moth discovery was the first use of … Aiken did so. In 1947, engineers working on the Mark II computer at Harvard University found a moth stuck in one of the components.

Mark II was an early electromechanical computer used in the US Navy. They taped the insect in their logbook and labeled it "first actual case of bug being found." 10:27 pm, September 9, 2013 . At 3:45 p.m., Grace Murray Hopper records 'the first computer bug' in the Harvard Mark II computer's log book. Courtesy Computer History Museum 1944: Harvard and IBM dedicate the Mark I computer… 66 years ago today, on the 9th September, 1947, operators of the Mark II Aiken Relay Computer being tested at Harvard University, found something curious trapped between points at Relay #70, Panel F. A moth. A real physical moth, that got stuck between the contacts of a relay in the Harvard Mark II computer. IBM Archives In 1947, Grace Hopper, an admiral in the US Navy, recorded the first computer ‘bug’ in her log book as she was working on a Mark II computer. september 9, 1947 First Instance of Actual Computer Bug Being Found. Her cartoons got a little more literal in 1947, when a now-legendary bug actually made its way into the Mark II supercomputer. Mark I was gigantic, an imposing sight, 2.5 m. high, 16 m. long, and almost 1 m. deep. The information you enter will appear in your e-mail message and is not retained by Tech Xplore in any form. The words "bug" and "debug" soon became a standard part of the language of computer programmers.

Daderot/CC BY-SA 3.0 The Museum of American History in D.C., where the bug is on display.

Your email address is used only to let the recipient know who sent the email. The Harvard Mark I, 1943Designed by Howard Aiken, this electromechanical computer, more than 50 feet (15 metres) long and containing some 750,000 components, was used to make ballistics calculations during World War II. Well, on September 9, 1945, U.S. Navy officer Grace Hopper found a moth between the relays on the Harvard Mark II computer she was working on.


Neither your address nor the recipient's address will be used for any other purpose. Ever wondered where the term ‘bug’ came from? Computer honchos work on a section of Harvard's Mark I in 1944. The problem was traced to a moth stuck between relay contacts in the computer, which Hopper duly taped into the Mark II's log book with the explanation: “First actual case of bug being found.” It was recored by Grace Murray Hopper one of the most important people in the history of computing. Graham Cluley ∙ @gcluley. The Harvard Mark I computer, predecessor to the Mark II where the bug was found. Seventy years ago, Grace Hopper discovered the first computer bug — a moth was stuck between relays in the Harvard Mark II computer she was working on. The whole apparatus measured 55 feet long. Yes, it's an oft-repeated tale, but it's got more bugs in it than Relay 70 probably ever had. Among those working on the Mark II in 1947 was mathematician and computer … On September 9, 1947, when the operators were using the computer to perform calculations, it gave the wrong results. First actual computer bug was found today, 66 years ago.
The original computer bug was a moth.
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