Abstract: In this paper, we present a digital circuit of arithmetic unit implementing addition and subtraction operations in multiple-precision arithmetic (MPA). This adder-subtractor unit is a part ...

What do striking matches and retail strategy have in common? If you’re thinking “not much,” think again. Swan Vesta, one of the UK’s most recognisable match brands, had long produced its matchboxes ...

Take this quiz to see how much you know about this topic already, then work through the guide and see if you can beat your score. Take a look at this number line. It shows 14 - 5 = 9. You can count ...

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