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: 2) by darkfeline on Saturday August 23 2014, @12:12AM
Someone had already built a 4-bit (I think?) computer years ago in Minecraft. By comparison, building a storage device is much easier, though tedious perhaps. A computer performs lots of complex operations, whereas data storage is just anything that can retain state (flip flops) and a huge mux/demux.
Although keep in mind, the nature of computation (the so-called computer science) is such that you can build a Turing complete computer out of only NAND gates or NOR gates. Redstone in Minecraft is more than sufficient for this, as are the dwarves and mechanisms in Dwarf Fortress. Personally, I'm waiting for someone to build a full computer out of ant farms.
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