As you saw in the
previous chapter, Excel's tables are great tools
for managing big collections of data made up of
long, uniform columns (like lists of customers or
products). But tables don't work so well if you
need to show more complex information, especially
if it's split into separate groups, each with its
Imagine a company sales report that lists a
year's worth of quarterly results for each of its
regions around the world. If you try to cram all
this data into one long listincluding subtotals
for each regionyou're likely to end up with a
spreadsheet that looks like a numerical version of
Twister. You'd be better off breaking out each
region into a separate group of cells, and then
tying everything together with another batch of
cells that sums it all up.
Crete (Κρήτη) is in many respects the culmination of the Greek experience. Nature here has been prolific, creating a dramatic quilt of big-shouldered mountains, stunning beaches and undulating hillsides blanketed in olive groves, vineyards and wildflowers. There are deep chiselled gorges, including one of Europe’s longest, and crystal-clear lagoons and palm-tree-lined beaches that conjure up the Caribbean.
Crete’s natural beauty is equalled only by the richness of a history that spans millennia. The Palace of Knossos is but one of many vestiges of the mysterious Minoan civilisation. Venetian fortresses, Turkish mosques and Byzantine churches bring history alive all over the island, but nowhere more so than in charismatic Hania and Rethymno.
Ultimately, though, it’s humans – not stones – that create the most vivid memories. Crete’s hospitable and spirited people uphold their unique culture and customs, and traditions remain a dynamic part of the island’s soul.
Apr A painter’s palette of wildflowers blankets the island as locals prepare for Easter.
One of the strengths of embedded Linux platforms like the BeagleBone is being able to choose the programming language that suits you best. In many other cases, choosing a hardware platform means you’re also committing to a particular language and development environment. That’s far from the truth with the BeagleBone. The downside to the flexibility that the BeagleBone affords is that there are many different ways to do the same thing. This chapter will walk you through one way to use code to interact with the pins on the board.
When you write code for a microcontroller like the Arduino, most of the time, you write the code on your computer, compile it, and then upload the compiled binary to the microcontroller. However, on an embedded Linux system like the BeagleBone, the compiler or interpreter exists on the board itself. This chapter will show you how to use the Python interpreter on the BeagleBone to program the pins to behave the way you want.
Python (Figure 5-1) is a powerful programming language that’s still very accessible for beginners. The code is relatively easy to understand and there are many libraries that help with complex tasks. For example, you’ll use Adafruit’s BeagleBone IO Python Library to help with reading and writing the GPIO pins.
Mantegna as Court Painter in Mantua he city-state of Mantua constituted the seventh largest nation in Italy, its lands
gained from years of conquest and consolidation. Although many of the Italian city-states had relatively democratic governments when they were first
established in the medieval period, only a few places, most notably Florence and Venice, retained anything close to a broadly participatory form of government by the fifteenth century.
Mantua, like the neighbouring duchies of Milan and Ferrara, was ruled by one family, the government held by physical might, moral suasion, and the hope for stability and rulership passed down by hereditary title.