Researchers create world's smallest 'computer'
Chicago, June 23 : Researchers at the University of Michigan (UM) in the US have come out with the world's smallest "computer" -- a device measuring just 0.3 mm to a side, completely dwarfed by a grain of rice.
Unlike traditional desktops that retain their program and data with or without a power back-up, these new microdevices lose all prior programming and data as soon as they are switched off, Xinhua news agency reported.
"We are not sure if they should be called computers or not. It's more of a matter of opinion whether they have the minimum functionality required," said David Blaauw, a professor of electrical and computer engineering, who led the development of the new system.
In addition to the RAM and photovoltaics, the new micro-computing device -- Michigan Micro Mote -- has processors and wireless transmitters and receivers.
As the Motes are too small to have conventional radio antennae, they receive and transmit data with visible light. A base station provides light for power and programming, and it receives the data.
Designed as a precision temperature sensor, the new device converts temperatures into time intervals, defined with electronic pulses. The intervals are measured on-chip against a steady time interval sent by the base station and then converted into a temperature.
As a result, the computer can report temperatures in minuscule regions, such as a cluster of cells, with an error of about 0.1 degree Celsius.
The system is very flexible and could be reimagined for a variety of purposes.
The device can help in oncology research. "Since the temperature sensor is small and biocompatible, we can implant it into a mouse where cancer cells are growing," said Gary Luker, a UM professor of radiology and biomedical engineering.
"We are using this temperature sensor to investigate variations in temperature within a tumour versus normal tissue and if we can use changes in temperature to determine success or failure of therapy."
The study was presented on Thursday at the 2018 Symposia on VLSI Technology and Circuits.
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Karnataka Assembly bypolls victory: Shivakumar gives credit to CM Siddaramaiah's leadership
Bengaluru (PTI): Karnataka Deputy Chief Minister D K Shivakumar on Saturday gave credit to Chief Minister Siddaramaiah's leadership as well as the five guarantees for the Congress party’s success in the assembly bypolls.
Shivakumar said this victory was a prelude to the 2028 assembly election where the party would once again win.
The Congress won the Channapatna, Shiggaon and Sandur Assembly segments.
The by-elections were held on November 13 and the results were announced today.
The ruling Congress on Saturday retained its strong hold of Sandur, with its candidate E Annapoorna, winning the seat by defeating BJP's ST Morcha president Bangaru Hanumanthu.
In the Channapatna segment, Congress' C P Yogeeshwara won the high profile seat by defeating JD(S) candidate and Union Minister H D Kumaraswamy's son Nikhil Kumaraswamy.
Similarly, Congress' Yasir Ahmed Khan Pathan won the Shiggaon Assembly segment by defeating former Chief Minister Basavaraj Bommai's son Bharath Bommai.
"Our guarantees, Siddaramaiah’s leadership and our workers and MLAs are responsible for our victory," Shivakumar told reporters.
He said neither Nikhil Kumaraswamy nor Bharath Bommai lost the election. In fact, this was the defeat of their parents -Union Minister H D Kumaraswamy and BJP MP Basavaraj Bommai.
"With this victory, our tally has now gone up to 138. There are other numbers as well, but I will not spell out how some people have internally supported us," Shivakumar, who is also Congress state president, said.
The Karnataka Assembly has 224 seats.
The Deputy CM advised his opponents to focus on development works instead of making baseless allegations as it would fetch them nothing but a constant defeat.
