Sales of desktop PCs and laptops are falling. It’s impossible to read any technical media without hearing about the “death of the PC.” And both Apple and Microsoft are soon to release operating systems that seek to merge the features of the computer operating system with those available on tablet devices.All this evidence mounts up to suggest that the Steve Jobs-coined “post PC era” is upon us. Well, I’m going to stick my neck out on this: I don’t buy it.Don’t get me wrong – I possess and adore an iPhone 4s, and if I need to quickly lo...