By Lou Farrell 
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Microchips were once a staple of science fiction, and now they are ubiquitous. Everywhere someone looks, there is a microchip nearby. They are the lifeblood of essential processes that keep society running, but they are also champions of entertainment.
The industry was not always this powerful or complicated, and the future felt clear-cut if someone understood the manufacturing and construction of the microchips of old. However, it is impossible to predict where a modern microchip could end up next.
Microchips are, and have always been, a small collection of circuits. They also included other parts, like capacitors, resistors and more.
They were inspired by the invention of transistors in 1947 by Bell Labs. The American company is commonly cited as the pioneer of what would influence modern microchip design, because the anatomy of a microchip is, simply, seemingly countless transistors in a single product. In 1958, Jack Kilby expanded the idea by creating the first integrated circuit (IC).
This is the first example of the powers of a microchip prioritizing two main features — miniaturization and energy efficiency. ICs were smaller and more powerful. They also removed the tedium of assembling thousands of individual wires and additional components. Everything became more streamlined, with the industry’s priorities focusing on a design that would work well in mass production.
Eventually, monolithic ICs became standardized. These versions were seamless chips, or completely assembled on a single layer of silicon from silica sand. The parts could be placed, insulated and etched onto these wafers in manufacturing facilities. The innovation further catapulted the chip industry into unprecedented levels of efficiency.
In 1971, the Intel 4004 microprocessor hit the market, becoming the first commercially available of its kind and inspiring countless other companies to follow suit. It was originally designed for a client, but subsequent rejection caused Intel to pivot and sell to a larger audience. Like most innovations, microchips were expensive and adopted by corporations before the general public.
Moore’s Law has been one of the most defining guiding principles for the semiconductor industry. It states that the number of transistors in microchips doubles every two years. During this time, the cost and power consumption of the technology also change.
While many suggest this law is defunct because of how quickly artificial intelligence (AI) is advancing, it still reflects the pace at which manufacturers and engineers have maintained consistent microchip research and development.
The manufacturing process begins with creating a silicon wafer from purified sand, followed by numerous steps. A process called photolithography creates the tiny patterns, establishing the blueprint for all the components to rest. Many layers of a thin film are deposited and then carved to create the desired structure.
Then, manufacturers make the device conductive by exposing it to many charged atoms called dopants. Alternatively, the maker could do this to better insulate it. Engineers continue layering wires on top of each other until it makes a microchip. They create a composition that can achieve certain levels of power management and demand, which is dependent on the architecture. The primary materials found in most semiconductors include:
For such a small product, a microchip contains an immense number of components. These are called systems-on-a-chip (SoCs) because they are holistic packages that contain everything needed to function. The core facets include:
Other chips include application-specific integrated circuits (ASICs), such as those used for cryptocurrency mining or networking.
Below is an interactive element exploring the integration of a microchip within a modern-day desktop computer. Feel free to click on the “ZOOM IN” button to explore further!
It is difficult to find a product that does not rely on a microchip. Microchips are among the most versatile pieces of technology humans have ever created, and many of their uses go unnoticed by the general public.
Many know their most prominent applications, as they interact with them almost every day or hear about them in the news. But there are also surprising and unexpected ways a modern microchip can sneak into the average person’s daily life.
Most of the technologies people interact with daily are powered by these tiny machines. These are the most in-demand sectors for chips:
It likely does not surprise most people to see these contenders, as microchips power smartphones, vehicle computers, video game consoles, medical devices, household appliances and so much more. They are also the foundation for every data center and internet connection worldwide.
There may be even more uses for chips worldwide that people do not consider, such as automation technologies for supply chains or agriculture. Everything from the national electric grid to irrigation systems has small computers that tell them how to activate and respond. Even credit cards have small chips in them to make every swipe secure. This proves how deeply and meaningfully they have permeated modern society.
However, there are more niche and obscure applications for microchips, some of which have not even breached commercial success. Here are some unique ideas that need a microchip to work:
Not only are the world’s most societally crucial technologies powered by microchips, but food and medicines are also relying on them. For years, the world has endured a chip shortage, catalyzed by the COVID-19 pandemic, supply chain delays and raw material scarcity.
As more products need them to operate, including artificial intelligence and the proliferation of data centers, more deadlocks and higher costs could result from the competitive landscape.
Google recently created a chip that can do something in five minutes that would previously have taken the world’s most adept computers 10 septillion years to do. Breakthroughs like this would not be possible without the historical advancements that came before, and the future will look back on moments like this as a stepping stone for whatever humans create next.
While predicting what will happen in the sector is impossible, there are trends that could shape the near future.
Moore’s Law is informed by the capabilities of silicon. However, the world is moving away from this material, which could make Moore’s Law irrelevant. Silicon’s limitations are becoming more prominent. Especially as worries over sand shortages persist, companies are seeking alternative methods for fashioning microchips. Some potential candidates include graphene and carbon nanotubes because they are strong conductors and more readily available.
As electronics become more complex, microchip designs could become more targeted and specific to each product. Most consumer products use general-purpose logic chips, but innovations like tensor and neural processing units prove that component requirements are shifting directions.
The entire world needs access to microchips, and shortages are making the fight more challenging for all players. This tension amplifies existing international conflict, causing issues with global trade. Some nations have already taken action, passing legislation to regulate and fund chip manufacturing. The EU Chips Act aims to enforce market growth, and the U.S.’s CHIPS and Science Act was designed to promote research and development.
Every technological advancement and political movement feels inextricably linked to AI development, and that includes chip innovation. This is because chips are vital for AI expansion. What is available to consumers and corporations alike will be determined by these personal and financial interests in AI.
Manufacturers and engineers keep pushing semiconductors and circuits to the next level, and the future is optimistic about how much they will improve in areas such as carbon impact and environmental resilience.
It seems like a modern microchip cannot get any faster, smaller or more powerful. Yet, the history of this innovation has always proven humans wrong.
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