Since its release in 1984, the Roland TR-909 has since become the de facto drum machine for electronic dance music. Over on Flickr, user Firegroove took apart his TR-909 to try to fix it and documented the whole process. Never again will you see such ridiculous pictures of a huge circuit board.
If you look at the boards and all the wiring, circuits, etc., it’s kind of funny how all this stuff can be emulated by software perfectly. All you need is a sample kit featuring all the sounds in a TR-909 (or 808 if you’re feeling hip hoppish) and a software sequencer. Next thing you know, you’ll be making dance beats quicker than you can say ATB.