According to this article on c|net:
Two … users have now revealed functioning hard drives built inside Minecraft that can read and write data. The first, created by Reddit and Imgur user smellystring can store 1KB [sic] of data, while a second, larger unit created by The0JJ can store 4KB [sic] of data.
"One day we will build a full computer in Minecraft, then play Minecraft on it. then the universe will crash," writes Imgur user mkat10z. Turns out, someone has already done that, creating a 2D platformer version of Minecraft that you play within Minecraft on a redstone computer.
UPDATE: It appears the referenced article was in error; the actual capacities should be in kilobits.
(Score: 1, Insightful) by Anonymous Coward on Friday August 22 2014, @01:52PM
Yeah screw all that learning how stuff works on the cheap.... Lets make them bust out all the parts and do it for real. You do realize *MOST* hardware design is done in 'virtual space' before they solder one diode to something else...
Part of the 'hacker'/make ethos is to take something and turn it into something else. You may not see the value. But they do and it is their time to 'waste'. If minecrafts FPS view did not make me queezy I would so be in there trying some of this stuff out...
(Score: 2) by morgauxo on Tuesday August 26 2014, @07:17PM
I'm sorry, you are right! Minecraft is a perfect simulator to learn on. What was I thinking? My thoughts would have doomed the whole real-world redstone mining industry!