This is a shot of the internals of a <a href="https://en.wikipedia.org/wiki/en:Space_Shuttle_Main_Engine" class="extiw" title="w:en:Space Shuttle Main Engine">space shuttle main engine</a> (SSME).  Visible here are many components (see the Wikipedia article linked above), including the Main Engine Computer (MEC) containing two doubly-redundant <a href="https://en.wikipedia.org/wiki/en:Motorola_68000" class="extiw" title="w:en:Motorola 68000">Motorola 68000</a> microprocessors (very simple microprocessors, much simpler than what's in your computer, but much less likely to have problems).  Each SSME has its own attached MEC, greatly simplifying the wiring of the shuttle (each space shuttle has three SSMEs).
<p>To see a large view of the space shuttle's tail, see <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/fastlizard4/8657654408">here</a>.
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This photo of the Space Shuttle <a href="https://en.wikipedia.org/wiki/en:Space_Shuttle_Endeavour" class="extiw" title="w:en:Space Shuttle Endeavour"><i>Endeavour</i></a> exhibit was taken at the <a rel="nofollow" class="external text" href="http://www.californiasciencecenter.org/">California Science Center</a>, the "retirement home" (if you will) of this particular shuttle.  If you live in the area, go check it out; entrance is only $2!
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/25649741@N04">Andrew "FastLizard4" Adams</a> from United States
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/fastlizard4/8657674498/">Space Shuttle Main Engine Internals</a>