sentence: architectures prominent 32-bit instruction set architectures used in general-purpose computing include the ibm system/360 and its 32-bit successors , the dec vax , the ns320xx , the motorola 68000 family , the intel ia-32 32-bit version of the x86 architecture , and the 32-bit versions of the arm , sparc , mips , powerpc and pa-risc architectures .