The University of Michigan has announced that its researchers have developed a 0.3 mm x 0.3 mm computer, which is smaller than a grain of rice to become the smallest computer in the world, so that the University of Michigan outperforms IBM in the development of small computing.
In March, IBM unveiled the world's smallest 1 mm x 1 mm computer, smaller than a rock salt, to beat the Micro Mote computer created by the University of Michigan research team in 2015, Its dimensions were 2 mm x 2 mm.
"We are not sure whether it should be called a computer," said David Blau, a professor of electrical and computer engineering who led the development of the new system. "It is a matter of opinion and depends on whether it performs the minimum computing functions."
He added that one of the biggest challenges in making the smallest computer in the world, which is ten times smaller than the size of the IBM is how to run a card is very low, especially when the system should be transparent packaging, where the light from any hand can stimulate currents in its circuits Small.
In addition to the processor and RAM, this computer relies on photovoltaic cells - a way to convert light into electricity - with processors, radios and receivers. Because it is smaller than conventional radio antennas, it receives and transmits data with visible light, and the base station provides light for power, programming and data reception.
"Basically, we had to innovate new ways of designing circuits that are low-energy and light-efficient. For example, diodes - which can behave like small solar cells - have been replaced by a type of capacitor called switched capacitors.
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