"computer books" entries
The market has been on a steady decline since mid-2008 and has continued downward right through the first half of 2009. And there are very few signs that the book-buying slump is going to turn around anytime soon. Overall, the market saw 595,821 fewer units sold in the first half of 2009 than were sold in the same period of 2008. Although we do not have data to show the trends between 2000 and 2003, the market performance this year is the worst we’ve seen since the fall of of 2001. You’ll notice in the chart below that the seasonal patterns have remained consistent, but sales are at a much lower volume than any previous year.
We will look at programming languages and drill in a little on each language area.
Overall the 2007 market for programming languages was down (1.67%) in 2007 when compared with 2006. There were 1,809,695 units sold in 2006 versus 1,779,523 units sold in 2007 which is (30,172) less units in 2007.
Recapping the big picture from the last post, you can see that the moderate-to-high growth of Consumer Operating Systems has not been visibly aided by the addition of 47 new Q1 '07 Vista titles, because there were no Vista titles in '06 — hence the black box for Vista. However, the whole Category Family (Consumer Operating Systems) benefits from 47 new titles with more than 86,000 Vista units sold in the first three months of this year.