References 485% 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 first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
- [1]90%ti.com/about-ti/newsroom/company-blog/from-idea-to-invention-the-origin-story-of-the-tiny-chip-that-changed-the-world.htmlti.com· Posted Oct 4, 2026· Starts Sep 12, 1958 ✓· 25% of score
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').
- [2]85%September 12: Successful Test of the First Integrated Circuit - Computer History Museumcomputerhistory.org· Added Oct 4, 2026· 25% of score
Gives the exact day, 12 September 1958.[1]
- [3]85%1958: All Semiconductor 'Solid Circuit' is Demonstrated - Computer History Museumcomputerhistory.org· Added Oct 4, 2026· 25% of score
Kilby's all-semiconductor circuit demonstration, 1958.[1]
- [4]80%First Semiconductor Integrated Circuit (IC), 1958 - ETHWethw.org· Added Oct 4, 2026· 25% of score
IEEE milestone; gives 'September 1958' and the circuit's size.[1]
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