The PC as we know it would not exist without Jobs.
He is like Henry Ford, he didn't invent the thing, but he did things to it that completely changed the industry and how we use it.
The following were all popularized by Apple
the mouse
GUI interface
USB connectors (one of the first to adapt them in a major way)
the elimination of the floppy drive and going to CD room only
One of the 1st portables that was really portable
The newton which was one of the first handheld PDAs
iPod, not the first but the MP3 player that really changed the business
iPad, first mass popularity tablet/pad
laser printer
And I am sure there are a lot of others too, but those are the ones off the top of my head.