David Marcus, president of PayPal, unveils PayPal Here in San Francisco in March. The service allows customers to use their smartphones to pay for purchases at retail stores. Kim White/AP hide caption

All Tech Considered
Tech, Culture and ConnectionThe Industry
Friday
Monday
Thomas Edison called the linotype the "eighth wonder of the world." Copyright Linotype: The Film hide caption
Long Before The Internet, The Linotype Sped Up The News
Wednesday
Four major universities are joining forces with Coursera, a Silicon Valley startup, to offer free online classes in more than three-dozen subjects. iStockphoto.com hide caption
Monday
Customers talk with Apple employees, in blue, inside a San Francisco Apple store on Friday, the first day of the launch of the new iPad. Paul Sakuma/AP hide caption
Monday
Nvidia Chief Executive Officer Jen-Hsun Huang co-founded the graphics chip maker in 1993. Paul Sakuma/AP hide caption
Tech Pioneer Channels Hard Lessons Into Silicon Valley Success
Tuesday
Nokia President and CEO Stephen Elop introduces the Lumia 900 smartphone during a CES news conference in Las Vegas. Julie Jacobson/AP hide caption