Ever glanced at the serial number on your dollar bills? Most of us don't think twice about those dark green digits on our cash. Here's something that might make you take a second look: some bills with ...

Beginners often have difficulty reading the value of –2’s complement number; here’s a simple technique that may help. In my previous column, I introduced the SANX-I Microcomputer, whose goal is to ...

In the computer, all data are represented as binary digits (bits), and eight binary digits make up one byte. For example, the upper case letter A is 0101001. Numbers however can take several forms.