If you’re a small-business owner, store manager, or accountant, you know how important accuracy is — right down to the dollars and cents. As many daily tallies require official records and reports, ...

[Ziggurat29] had been playing around with infrared protocols, and realized he had a spare point-of-sale printer kicking around in his junk box. So he decided to whip up his own calculator infrared ...

Which printing calculator is best? You can do nearly all casual or home calculations using a smartphone or even by inputting your calculations directly into a search engine such as Google. For those ...

Which printing calculator is best? You can do nearly all casual or home calculations using a smartphone or even by inputting your calculations directly into a search engine such as Google. For those ...