My last column introduced the concepts underlying BCD (binary-coded-decimal) representations. In particular, we considered unsigned versus 10s-complement versions of BCD numbers. In this column we are ...

When subtracting decimals remember to keep the decimal points in line with each other. You can add zeros after a decimal point without affecting its value, so \({2}\) is the same as \({2.00}\). David ...

Calculate \(\textup{3.6~+~14.73}\). Make sure that units line up with units, tenths line up with tenths and so on. Use zeros as placeholders if you need to.