Apple IIc, BBC Micro, C64, Sinclair ZX-81. Arguably even the Apple I. So the oldest prior art is from about 1976-1977 and it's Apple's invention. Apple put thr

Apple IIc, BBC Micro, C64, Sinclair ZX-81. Arguably even the Apple I. So the oldest prior art is from about 1976-1977 and it's Apple's invention. Apple put through a new patent to protect against patent trolls. If the PTO will (incorrectly!) accept a new patent for this very, very old invention then Apple is vulnerable to nuisance lawsuits from trolls so they'd rather be holding the new ridiculous patent themselves. They do with this every new product they're even considering developing.