Some more links on the electromechanical fire computers of the B-29:<p><a href="http:&#x2F;&#x2F;www.twinbeech.com&#x2F;CFCsystem.htm" rel="nofollow">http:&#x2F;&#x2F;www.twinbeech.com&#x2F;CFCsystem.htm</a> (scroll down for technical information from the user manual)<p><a href="http:&#x2F;&#x2F;www.glennsmuseum.com&#x2F;bombsights&#x2F;everything.html#B-29_Central_Fire_Control_Computer" rel="nofollow">http:&#x2F;&#x2F;www.glennsmuseum.com&#x2F;bombsights&#x2F;everything.html#B-29_...</a> (great pictures)<p><a href="http:&#x2F;&#x2F;web.mit.edu&#x2F;STS.035&#x2F;www&#x2F;PDFs&#x2F;Newell.pdf" rel="nofollow">http:&#x2F;&#x2F;web.mit.edu&#x2F;STS.035&#x2F;www&#x2F;PDFs&#x2F;Newell.pdf</a> A bonus link, review paper on WWII electromechanical fire control computers.