Whether someone is purchasing a graphics card or an HDMI cable, they need to carefully ... in the description of these products is the DPI, a technical term that can be difficult to decipher ...

A TFT panel connected to a Raspberry Pi without the use of an HDMI decoder? What is this sorcery??? It's the DPI Kippah from Adafruit! This HAT-like* board snaps onto a Raspberry Pi B+, A+, Pi 2, Pi 3 ...