Working largely alone in a Texas Instruments lab over a quiet summer when most colleagues were on vacation, Jack Kilby pursued an idea to combine multiple electronic components on a single piece of germanium. On September 12, 1958, he showed TI executives a working device, the first integrated circuit, a breakthrough that would eventually replace hand-wired circuit boards and make modern computing possible.
In the summer of 1958, Texas Instruments' Dallas labs were unusually quiet — most senior engineers had taken their annual vacation, but Jack Kilby, a new hire without accrued leave, stayed behind. Alone with his notebooks, he turned over an idea that had been nagging him: rather than wiring together individual transistors, resistors, and capacitors, why not fabricate all of them from the same block of semiconductor material?
Through July and into September 1958, Kilby refined his concept, eventually building a crude but functional device — a sliver of germanium with a transistor and other components etched into it, connected by fine gold wires. On September 12, 1958, he demonstrated the first working integrated circuit to TI executives, a moment now recognized as one of the pivotal breakthroughs of the 20th century.
The integrated circuit's implications took years to fully unfold, but it eventually rendered obsolete the tedious hand-assembly of circuits and became the foundation of every microprocessor, smartphone, and computer that followed. Kilby shared the 2000 Nobel Prize in Physics for the invention, a rare instance of a solitary summer of tinkering reshaping the entire arc of technological history.
Key people: Jack Kilby