The world's first millimeter-level computing system prototype comes out

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American scientists have developed an implantable intraocular pressure monitor for glaucoma patients. It is believed to be the world's first complete millimeter-scale computing system prototype. Coupled with a set of compact radio equipment that can find frequencies without tuning, multiple millimeter-level computing systems can be built into a wireless sensor network. These two advances are important milestones in the journey towards millimeter-scale computing, and millimeter-scale computing is considered to be the forefront of future research in electronics. Researchers have submitted relevant papers at the International Transistor Circuit Symposium held on the 22nd.

According to the description of Bell's Law, one of the effective rules of experience for computer development, about every 10 years, technological progress will lead to the emergence of a new computer platform with a smaller scale and lower cost, from mainframes, personal computers, notebooks to Smartphones, this law has been fully confirmed. The researchers said that their newly developed millimeter-level computing system, which is almost invisible, will drive the future of the computer industry-universal computing (a brand-new computing concept that emphasizes embedding computers in the environment or daily tools) , Let the computer itself disappear from the sight of people).

The IOP monitor was developed by Dennis Sylvester and David Blow, professors in the Department of Electrical Engineering and Computer Science at the University of Michigan, and David Wentzlov, an assistant professor, who used an ultra-low power microprocessing Device, a pressure sensor, memory, a thin-film battery, a solar cell, and a compact radio with an antenna are integrated. The size of the entire system is only one centimeter square. The system performs measurements every 15 minutes, with an average power consumption of 5.3 nanowatts. It can complete battery charging after being exposed to indoor light for 10 hours or direct sunlight for 1.5 hours, and can store measurement information within a week. The research team said that the device is expected to be put on the market within the next few years.

Although this new system was developed specifically for medical human sensor networks, it also has broad application prospects in tracking environmental pollution and monitoring structural integrity.

However, although this millimeter-scale computing system is very complete, the radio equipment it is carrying cannot allow it to "talk" to similar other systems. Such node-to-node communication is an important feature that a wireless sensor network must have. To this end, researchers are developing a radio device with an on-chip antenna. They use advanced complementary metal oxide semiconductor (CMOS) technology to control the shape and size of the antenna, which can control the antenna's response to electronic signals, thereby avoiding the need to rely on the current "talk" between two isolated devices. The heavy external balance line greatly reduces the size of the radio system.

Researchers are now studying how to reduce the power consumption of the radio device to make it compatible with millimeter-level batteries. They also hope to apply for patents for these seemingly small but significant developments, and seek business partners to bring these technologies to market.

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