CONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins85% CONFIDENCEOverall confidence: 85%How well the pin's source and references back up its dates.Weighted average of how firmly 4 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better
The Computer History[2][3] Museum's 'This Day in History' entry for September 12 records Kilby's successful test at Texas Instruments in 1958; TI's blog and ETHW[4] confirm the 1958 demonstration (ETHW gives only 'September 1958').On 12 September 1958 Texas Instruments engineer Jack Kilby successfully tested the first working integrated circuit, a phase-shift oscillator on a sliver of germanium with its components linked by wires.
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