Five years later: Much more intricate!

Western Digital Caviar 2540 — “AT Compatible Intelligent Drive” (bottom view).
Still under a gigabyte, but more than halfway there with a storage capacity of 540Mb (likely unformatted). 1048 cylinders; 16 heads; manufactured in Malaysia in March, 1995.
» Physical dimensions: 5.6875×4×1".
» Yes, this one is as long as yesterday’s subject is wide, so it has exactly half the footprint and two-thirds the height or thickness!
» More specs: http://www.wdc.com/en/products/legacy/Legacy.asp?Model=AC2540

1 year ago (“Pseudogynoxys cummingii”): http://365project.org/rhoing/365/2013-01-15
2 years ago (“Blue (or ‘Touchdown!’?)”): http://365project.org/rhoing/365/2012-01-15
3 years ago (“Snow routes”): http://365project.org/rhoing/365/2011-01-15

[Rick Schies]

Reminds me of a city with all the circuits