1 / 6

ENIAC

ENIAC. Created By Jordan Humphries. History . Electronic Numerical Integrator And Computer or ENIAC for short was the first electronic general-purpose computer.

donnan
Download Presentation

ENIAC

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ENIAC Created By Jordan Humphries

  2. History • Electronic Numerical Integrator And Computer or ENIAC for short was the first electronic general-purpose computer. • ENIAC's design and construction was financed by the United States Army, Ordnance Corps, Research and Development Command which was led by Major General Gladeon Marcus Barnes. • The construction contract was signed on June 5, 1943 • work on the computer began in secret by the university of Pennsylvania's Moore school of electrical Engineers starting the following month under the code name "Project PX“ • The completed machine was announced to the public the evening of February 14, 1946

  3. Design • ENIAC was a modular computer, composed of individual panels to perform different functions. • ENIAC contained 17,468 vacuum tubes , 7,200 crystal diodes, 1,500 relays, 70,000 resistors, 10,000 capacitors and around 5 million hand-soldered joints. It weighed more than 30 short tons (27 t), was roughly 8 by 3 by 100 feet (2.4 m × 0.9 m × 30 m), took up 1800 square feet (167 m2), and consumed 150 kWof power.[ • ENIAC used ten-position ring counters to store digits; each digit used 36 vacuum tubes, 10 of which were the dual triodes making up the flip-flops of the ring counter.

  4. programs • ENIAC could be programmed to perform complex sequences of operations, which could include loops, branches, and subroutines. The task of taking a problem and mapping it onto the machine was complex, and usually took weeks. After the program was figured out on paper, the process of getting the program "into" ENIAC by manipulating its switches and cables took additional days. • In 1997, the six women who did most of the programming of ENIAC were inducted into the Women in Technology International Hall of Fame. As they were called by each other in 1946, they were Kay McNulty, Betty Jennings, Betty Snyder, MarlynWescoff, Fran Bilas and Ruth Lichterman. Jennifer S. Light's essay, "When Computers Were Women", documents and describes the role of the women of ENIAC as well as outlines the historical omission or downplay of women's roles in computer science history.The role of the ENIAC programmers was also treated in a 2010 documentary film by LeAnn Erickson.

  5. Public knowledge • The Z3 and Colossus were developed independently of each other and of the ABC and ENIAC during World War II. The Z3 was destroyed by Allied bombing of Berlin in 1943. The Colossus machines were part of the UK's war effort. Their existence only became generally known in the 1970s, though knowledge of their capabilities remained among their UK staff and invited Americans. All but two of the machines that remained in use in GCHQ until the 1960s, were destroyed in 1945. The ABC was dismantled by Iowa State University, after John Atanasoff was called to Washington, D.C., to do physics research for the U.S. Navy. ENIAC, by contrast, was put through its paces for the press in 1946, "and captured the world's imagination". Older histories of computing may therefore not be comprehensive in their coverage and analysis of this period.

  6. WEB Liks • http://en.wikipedia.org/wiki/ENIAC

More Related