SALT LAKE CITY John Warnock, who helped invent the PDF and co-founded Adobe Systems, has died. He was 82.
The Silicon Valley entrepreneur and computer scientist died Saturday surrounded by family af.
Until Warnock and Adobe came along, desktop printing was an arduous, expensive and unsatisfying endeavor. Warnock developed protocols that came loaded into desktop printers themselves, and that accurately rendered what a computer sent them.
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