Matt: My solar-powered calculator. How long will it last? Is it a perpetual-motion machine that will go on calculating into the next millennium? Does it have any parts that will die off like any ...

Dismissing allegations of 'varying EVM battery levels', Chief Election Commissioner Rajiv Kumar said Electronic Voting Machines are totally "safe and robust," and have batteries like a calculator, not ...

Product Safety Australia, part of the Australian Competition and Consumer Commission, announced the Casio HL-820VA electronic calculator was being urgently recalled as it did not comply with mandatory ...