Exchangeable Image File Format (EXIF) data can tell you which camera was used, what focal length, ISO, exposure time was set when taking a photo. Let's see how to look for that data in Windows 7.
If you need, besides major accounts, an extra account with limited access to data, you can add Windows 8 Guest account. The process is almost the same as in Windows 7.
Neat little trick to force the preview images of running programs in Windows 7 taskbar or a so called Aero Peek, to show instantly with no delay at all.
By default Windows calculator doesn't support order of operation, to enable the functionality you need to activate the scientific view, let me show you how.