This came from a March 2025 Tesla advertisement at the White House. President Trump said of the Cybertruck, "It's all computer". This may have been a run-of-the-mill mangled sentence. It may have indicated that the president considers "computer" to be a construction material like steel or wood. Difficult to say, but this is his best contribution to the memeverse since his "concepts of a plan".
Use it when...you see something that uses a lot of microelectronics and everyone knows it uses a lot of microelectronics, e.g. a datacenter, aircraft cockpit, or electric car.