[$] The NumWorks graphing calculator

<p>As the Internet of Things (IoT) becomesever more populous, there is no shortage of people warning us that thecontinual infusion into our lives of hard-to-patch proprietary devices running hard-to-maintain proprietary code is a bitof a problem. It is an act of faith for some, myself included,that open devices running free software (whether IoT devices or not) areeasier to maintain than proprietary, closed ones. So it's always of interest when freedom (orsomething close to it) makesits way into a class of devices that were not previously so blessed.<p>Subscribers can click below for a look at the NumWorks graphing calculatorby guest author Tom Yates.