Who invented something depends on your definition of something.
See link below. My comments to the blog this link refers to are also attached below the link.
TI makes a lot of money (and I mean a lot) by suing people and companies for patent infringement.
DEC did come up with a PC concept, but Harold Gould (I believe this was his name, but in any case the DEC founder who recently passed away.) did not believe it was a viable project and so he rejected the concept.
TI developed a PC in around 1981-2, the TI99. It was priced at $1000. At about the same time IBM and Apple came out with PCs at a much lower price. Hence the TI99 was nbot marketable and actually could not be given away.
FAMOUS QUOTE: “640K memory is all a computer user will ever need”
WHO SAID IT: