http://paper.li/f-1516842543?fbclid=IwAR3srzT2oqSUi3N6eRqFsTY7QAHsImTqGiGD4bF2UPQIrFBrDEoRuE69z2c&read=https%3A%2F%2Fwww.fossmint.com%2Foperating-systems-for-the-internet-of-things%2F