Well Steve Jobs introduced fonts to computer. Something that he stole from the hands of specialized calligraphers and enabled everyone to produce great content.
What? First of all, I think that you're confusing typefaces and fonts. A computer font is computer code that describes how the size and shape, orientation, etc. of a collection of glyphs should be output onto the screen. Computers had successfully output text to a screen for decades before the Macintosh.
The Xerox Star, which came out in 1981, three years before the Apple Macintosh, had sans-serif and serif typefaces:
http://www.digibarn.com/collections/screenshots/xerox-star-8...
The Macintosh might have been the first popular commercially available machine that offered several computer fonts, but Jobs certainly did not come up with the idea.
I've always wondered though how Steve internalized that thought. One less charitable interpretation was that he felt that 'greater artists' had more right to a concept than lesser artists because they could do more with it. The literature has certainly portrayed him as very protective of ideas that he has championed, without regard to the idea's origin.