Assembler Example: CX as a loop counter
	ä We can take advantage of CX as a loop counter to speed up the program        MOV   AX, InitialValue        MOV   BX, OFFSET ArrayX        MOV    CX, ArraySize        JCXZ   DONE InitLoop:   MOV   [BX],AX        ADD   BX,2        LOOP   InitLoop        ... DONE: ä Only CX can be used as a loop counter ä Compilers (good compilers) generate code to take advantage of special instructions that help reduce execution time