Google's Nexus 7 is both cheap and powerful and its small size makes it easy to carry round. It has no SD card slot as standard, but with only a few steps and minimal fuss, you'll quickly be able to ...

You might be familiar with SanDisk MicroSD cards from using one in your mobile phone, old mp3 player, or portable GPS system. Because microSD cards are so small, about one fourth the size of a regular ...