The humble HDMI port has become crucial in the world of TVs, but devices like smartphones and game consoles can still connect ...

Projectors underwent their own glow-up. Laser technology crushed lamp-based models into obsolescence, delivering brighter ...

Listen to the full series on BBC Sounds. To ensure that the minimum amount of power is lost from the cables: the cables are thick so that their resistance is low high voltages are used to reduce the ...