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Integrated circuit

technology Maturity 7-9 Vital Level 3 Next article →

An integrated circuit is a tiny assembly of electronic parts. People often call them microchips or just chips.

These parts are built onto a thin, flat piece of semiconductor material. Most chips use silicon for this purpose. These circuits are found in almost every electronic device today. They power our computers, smartphones, and even our televisions. These chips allow devices to be small and very fast. They have changed how we use technology every single day.

How does a chip actually work? Instead of building parts one by one, engineers use a way called photolithography. This process prints all the components at once as a single unit. The chip includes transistors, resistors, and capacitors. A transistor acts like a tiny switch for electricity.

Intel 8742 153056995
Intel 8742 153056995

Because the parts are so close together, they switch very quickly. This proximity also helps the chip use very little power. This makes the chip much more efficient than older designs.

The history of the chip began in the late 1950s. Jack Kilby worked at Texas Instruments and showed the first working example in 1958.

Kilby solid circuit
Kilby solid circuit

His version used germanium and gold wires to connect parts. However, Robert Noyce at Fairchild Semiconductor made a better version in 1959. Noyce used silicon and a method called the planar process.

Robert Noyce with Motherboard 1959
Robert Noyce with Motherboard 1959

This allowed for reliable connections made of aluminum right on the chip. Most modern chips are based on Noyce's design.

Chips have grown much more powerful over time. This growth often follows a rule called Moore's law. This rule suggests that the number of transistors on a chip doubles every two years.

In the early 1970s, chips were much slower and had less capacity. Today, a modern chip can have billions of transistors. You can find many billions of them in an area the size of a fingernail. Some chips even have 25 million transistors in just one square millimeter.

You can see the impact of these chips in your own home. They are the brains inside your kitchen appliances and your car.

AD570JD
AD570JD

Some chips are even made to sense light. These are called charge-coupled devices and are used in digital cameras. Other chips use tiny mechanical parts called MEMS. These help deploy airbags in cars to keep people safe. From your phone to your car, these tiny chips run our modern world.

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🖼️ Images & Media (9)
File:NXP PCF8577C LCD driver with I²C (Colour Corrected).jpg
NXP PCF8577C LCD driver with I²C (Colour...
File:Kilby solid circuit.jpg
Kilby solid circuit.jpg
File:Robert Noyce with Motherboard 1959.png
Robert Noyce with Motherboard 1959.png
File:Dov Frohman.jpg
Dov Frohman.jpg
File:AD570JD.jpg
AD570JD.jpg
File:Intel 8742 153056995.jpg
Intel 8742 153056995.jpg
File:Cmos-chip structure in 2000s (en).svg
Cmos-chip structure in 2000s (en).svg
File:RUS-IC.JPG
RUS-IC.JPG
File:80486DX2 200x.png
80486DX2 200x.png
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