Demonstration of the First Working Integrated Circuit
Dallas, Dallas County, Texas
Marker Inscription
The twentieth-century age of electronics can trace its roots to the 1906 invention of the triode vacuum tube, which marked the birth of modern radio. The invention of the transistor after World War II ushered in a new era of solid-state electronics. As engineers designed increasingly complex equipment, the difficulty of interconnecting large numbers of individual transistors and other components to form electronic circuits was a barrier to further progress. The need arose for a reliable, cost-effective way to produce and interconnect the components. Technical research groups in the United States and abroad began work on the problem. In 1958, Jack St. Clair Kilby, an engineer at Texas Instruments (TI) in Dallas, designed and built an integrated circuit with all the components formed in a single piece of semiconductor material. On September 12, 1958, he demonstrated this first working integrated circuit to TI personnel in the semiconductor building on this site. This conceptual breakthrough and work elsewhere led to development of the microchips that are at the core of modern electronic products, including a broad range of consumer electronics, digital computers, defense systems, and global communications networks.
Erected by Texas Historical Commission
The Story
For decades, engineers struggled to interconnect the growing tangle of transistors and components that made up modern electronics — a "tyranny of numbers" that threatened progress. In 1958, Texas Instruments engineer Jack St. Clair Kilby solved it by forming all the components of a circuit within a single piece of semiconductor material. On September 12, 1958, he demonstrated the first working integrated circuit to colleagues on this site.
Why it matters
Kilby's breakthrough gave birth to the microchip, the foundation of virtually every computer, phone, and digital device in the modern world.
The story behind this marker
AI contextThe era
In the 1950s, electronics were changing fast. The vacuum tube, which had made radio and early computers possible, was giving way to the transistor, invented after World War II. Transistors were smaller, cooler, and more reliable than tubes, and engineers rushed to build ever more ambitious machines with them.
But success created a new problem. Every transistor, resistor, and capacitor had to be made separately and then wired together by hand. As circuits grew to thousands of parts, the connections multiplied, and each one was a chance for failure. Engineers called it the "tyranny of numbers." The more complex a machine became, the harder it was to build reliably, especially for military and space programs that needed electronics to be small and dependable.
This was also the dawn of the Space Age. The Soviet Union's Sputnik launch in 1957 alarmed Americans and set off a push for better technology. Research groups in the United States and abroad were searching for a way out of the wiring trap, and a Dallas company called Texas Instruments was among them.
People & events
Jack St. Clair Kilby, a soft-spoken engineer, joined Texas Instruments in Dallas in 1958. As the often-told story goes, he was so new that summer that he had not earned vacation time, so he spent the quiet weeks while many colleagues were away thinking hard about the interconnection problem.
His idea was elegant: instead of making each component separately and wiring them together, why not form all of them in a single piece of semiconductor material? He designed and built a device to prove it. On September 12, 1958, in the semiconductor building on this site, Kilby demonstrated the first working integrated circuit to TI personnel. It was small and crude by later standards, but it worked.
The marker notes that "work elsewhere" was also crucial. Soon after, Robert Noyce at Fairchild Semiconductor in California independently developed an integrated circuit design better suited to mass production. Both men are generally credited as inventors of the chip. Kilby's achievement was recognized with the Nobel Prize in Physics in 2000, and he also helped develop the first handheld electronic calculator at TI.
Its place in the American story
It is hard to overstate what grew from this breakthrough. The integrated circuit became the microchip, and microchips now sit at the heart of computers, phones, cars, medical equipment, communications networks, and defense systems. Nearly every piece of modern technology you touch traces its lineage back to the problem Kilby solved here.
The chip also reshaped the American economy and national security. Early integrated circuits were adopted for military and space programs, helping the United States compete during the Cold War and reach for the Moon. Over time, the steady shrinking of chips put powerful computing into ordinary homes and pockets.
This site is also a reminder that the story of American innovation is not only a Silicon Valley story. Texas was there at the very beginning, and a single demonstration in a Dallas lab helped launch the digital age.
If you visit
Unlike many historic sites, this one does not look old, and that is part of its charm. The marker stands in the world of modern industry, a fitting setting for an invention that still drives that world today. Check ahead about access, since the area is tied to an active corporate campus.
As you read the marker, pull out your phone and consider that it holds billions of transistors on its chips, the direct descendants of the handful of components Kilby formed on one small piece of semiconductor in 1958. It is a great moment to share with kids who have never known a world without screens.
This stop pairs well with a visit to Dallas's museums and landmarks, and it makes a thought-provoking contrast to Texas's many frontier and oil markers: here, history is measured not in miles traveled or barrels pumped, but in circuits made unimaginably small.
Written by AI to add context, grounded in the marker’s inscription and the historical record. The inscription above is the original, unaltered text.
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Related people
- · Jack St. Clair Kilby
Related events
- · Demonstration of the first integrated circuit, 1958
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