To work with bit patterns you have to master the mask. Find out what lies behind in this extract from Programmer's Python: Everything is Data.

The spreadsheet was a remarkable  invention and yet the people who pioneered it didn't reap all the rewards they should have. Today we take spreadsheets for granted, but there is fascinating story lurking behind the scenes.

Regular expressions are another example of a little language - expressive yes but not Turing complete. This is an extract from my book Trick of the Mind which explores what it is to be a programmer.

In the conference season, developers face the perennial problem of getting from one hotel to another to meet colleagues. How good is your ability to write procedures to find shortest distance in a city block setting.  Let's look at how the team at International Storm Door & Software set out the problem of Taxicab Geometry.

There is an unfortunate problem with the new Pico 2 - its input stage has more leakage than you might expect and what is more this is non-linear and so leads to some strange behavior. This is an extract from my newly published book all about the Pico/W and Pico 2/W in C.