Mark 1 computer

Because a few people have asked about the old mechanical type Navy analog fire control computers: I have just put up a couple pictures of the Mk.1 fire control computer in my analog museum. http://www.best.com/~dcoward/analog/fordsperry.htm I also recently picked up a couple manuals for the Mark 1 computer: COMPUTER MARK I AND MODS DESCRIPTION AND OPERATION (OP 1064) June 1945 Now I can stop envying these young guys with computers that are older than they are. I don't have the computer, but I have a user's manual that's older than me. :) BASIC FIRE CONTROL MECHANISMS (OP 1140) September 1944 This manual describes the workings of all of the basic mechanisms (multipliers, integrators, resolvers, differentials, synchros, cams, etc.) I mention this because one of these basic mechanisms was up for bid on eBay this week. And the pictures may disappear any minute!! http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=330171722 This is called a Component Integrator. It has two input shafts, a Speed Input and a Angular Input. And it has two output shafts, one is the product of the speed input and the cosine of the angular input and the other is the product of the speed input and the sine of the angular input. Now back to the world of TTL logic, sorry for the interruption. --Doug ==================================================== Doug Coward dcoward(a)pressstart.com (work) Sr. Software Eng. mranalog(a)home.com (home) Press Start Inc. http://www.pressstart.com Sunnyvale,CA Curator Analog Computer Museum and History Center http://www.best.com/~dcoward/analog ====================================================