which keil C software to use?

i dunno which keil C evaluation software to download in order to program my microcontroller AT89S51 ? thanks for ur interest.
which keil C software to use?

i dunno which keil C evaluation software to download in order to program my microcontroller AT89S51 ? thanks for ur interest.
when I count the cycle of instructions in A53, I just want the cycle not including operation of memory and cache, which performance counts i should remove? thanks a lot！

when I count the cycle of instructions in A53, I just want the cycle not including operation of memory and cache, which performance counts i should remove? thank's a lot！
when I count the cycle of instructions in A53, I just want the cycle not including operation of memory and cache, which performance counts i should remove? thanks a lot！

when I count the cycle of instructions in A53, I just want the cycle not including operation of memory and cache, which performance counts i should remove? thank's a lot！
Supported Operating System for uVision4......?

Will uVision4 IDE work with Window7 OS(32 bit or 64 bit) or not ?