NASA Photo ID: S88-47513 File Name: 10062938.gif Film Type: 4x5 CN Date Taken: 09/14/88 Title: Space shuttle general purpose computers (GPCs) (current and future versions) Description: Current and future versions of general purpose computers (GPCs) for space shuttle orbiters are represented in this frame. The two boxes on the left (AP101B) represent the current GPC configuration, with the input-output processor at far left and the central processing unit (CPU) at its side. The upgraded version combines both elements in a single unit (far right, AP101S).