Look Up Say More Mashable's Best: E-readers, robovacs, laptops, earbuds, smart home and more Mashable @Home Trending Now Mashable Selects Top creators, ranked Gift Ideas For Everyone On Your List Creator Playbook In My Bag AI at School Safety Net All Series One of the best apps you never knew you needed. The following content is brought to you by Mashable partners. If you buy a product featured here, we may earn an affiliate commission or other compensation. Deal pricing and availability subject to change after time of publication. Free online file converters make you upload your files to someone else's server, and many of them limit you to a few files a day or add a watermark to the result.

Trending Now Mashable's Best: E-readers, robovacs, laptops, earbuds, smart home and more Look Up Mashable Selects Say More Top creators, ranked Gift Ideas For Everyone On Your List Creator Playbook In My Bag AI at School Safety Net Versus All Series Fifteen years after Steve Jobs' death, Apple leaders and fans reflect on his legacy He changed my life forever, says Tim Cook. Olivia Tauber is the deputy editor of digital culture, covering creators, media, movies, beauty, and more. Based in New York, her work has appeared in The New York Times, Vanity Fair, The Cut, Teen Vogue, Complex, and Interview Magazine. She holds a Master's degree in Journalism from NYU and a Bachelor's from the University of Michigan. She also runs Fan Mail, a weekly pop-culture newsletter.

A four-dollar check that Apple co-founder Steve Jobs wrote to Radio Shack in 1976 was up for auction on Wednesday at Boston-based RR Auction with a bid of more than $33,000 with five hours left to go. The signed check, drawn against an "Apple Computer Company" account at a Wells Fargo Bank branch in Los Altos, California, joins a hot market for Jobs' signature and memorabilia. Last year, a $9.18 Apple Computer cheque signed by Jobs in 1976 sold for $55,000; another from the same year, for $13.86 to Elmar Electronics, sold in March for $37,564. The Apple inventor's signature on a job application for employment as an "electronics tech or design engineer" from 1973, classified as Jobs' earliest known signature by the auctioneer, sold in 2018 for $174,757. A signature from three years later, when Jobs was 21, that appeared on an original Apple founding contract signed by Jobs, Steve Wozniak and Ronald Wayne was sold by Sotheby's in December 2011 for $1,594,500.

In 1980, according to Inc., Apple's then-president Mike Scott sent out an office memo: "EFFECTIVE IMMEDIATELY!! NO MORE TYPEWRITERS ARE TO BE PURCHASED, LEASED, etc., etc. Apple is an innovative company. We must believe and lead in all areas. If word processing is so neat, then let's all use it! Goal: by 1-1-81, NO typewriters at Apple... We believe the typewriter is obsolete. Let's prove it inside before we try and convince our customers."

The emergent promise of Artificial Intelligence is its ability to gain mastery over huge flows of constant data, distill findings, identify opportunities, and make recommendations. In applications such as autonomous cars, AI will go beyond recommendations and take immediate and on-going actions based on continuous streams of information. With the exponential growth in computer processing power and advanced algorithms, affordable AI will initially take hold in business, science, medicine. Eventually, the impact of AI on all aspects of society will be limitless. As promising as the future of Artificial Intelligence may seem, the true power of AI may not be the ability to crunch enormous data at whirlwind speeds, but rather its ability to incorporate a broad range of cross-discipline data sources.

Instead of going to school, school will come to you. That's the prize-winning idea behind RISE High, a proposed Los Angeles charter high school designed to serve homeless and foster children whose educations are frequently disrupted. Los Angeles educators Kari Croft, 29, and Erin Whalen, 26, who came up with the idea, won 10 million in XQ: The Super School Project, a high school redesign competition funded by Laurene Powell Jobs, the widow of Steve Jobs. RISE is one of 10 10-million winning school projects nationwide. Winners receive the prize money over five years.