Just as broadcast radio was turning one hundred, Casio was selling its one billionth calculator, as the company reportedly announced that this past December held the milestone purchase. The firm's first electronic calculator, dubbed the 001, hit the market in 1965, and played a big part in the development of the chip industry by generating demand for LSI chips. The pocket-sized renditions the company is so well known for started in 1972 with the Casio Mini, only to be followed by the graphing scientific version in 1985. These monochrome graphing editions will always hold a special spot in our hearts, as there was just nothing like kicking back during class and crushing your previous Tetris record while the instructor gave you kudos for focusing so intently on your work, and of course, that wasn't the only game to ever get ported to the small screen. So here's to Casio for hitting the big 1 billion, but we've got to admit, it looks like TI is the current champ in terms of universal acceptability, but we can't argue too much with a figure like that.

What good is another bonafide learning tool without a dash of fun beneath the hood? While OLPC XOs have just recently started rolling off production lines (and heading to eBay, most likely), it seems a few folks with a thing for 1992 have put the long-awaited machine to its best use yet. While Quanta Computer is slated to start a "test production" of these gizmos any day now, these bandits tested out its compatibility with a retro classic by installing (and successfully playing) the original Doom. Although this title has been the focal point of quite a few ports throughout the years, we'd say this rendition is definitely vying for king of them all, so be sure to continue on for the YouTube presentation.