New iMac Retina 4K and 5K use digital cinema color technology unavailable on any other comparable desktop systems, and for a good reason which is now finally coming to light, with 10-bit color range support in Mac OS X El Capitan.

One of the most poorly understood features that are part of Microsoft Windows 10, is called “Windows Update Delivery Optimization”. In a nutshell, this process uses peer-to-peer communication between your Windows 10 PC, and any other computer on the same local network, or on the Internet, to share software updates from Windows Update.

As expected, the latest update to the current build seems to provide easier support for PIN authentication, on devices that do not have fingerprint readers, nor Intel RealSense 3D cameras to enable face recognition.

To get an idea of what it was like to use Windows v1.01, Twitter user and computer engineer Jeff Par has created PCjs, an emulator that can run within a browser window, which simulates the Windows 1.01 experience down to the fine details.