汇编 小写转大写的程序

DATA SEGMENT INPUT DB 250 db ? db 240 DUP(0) COUNT DB 250 DUP(0) NUMBER DB 0 STR1 DB 'Please enter your letters,and press enter to end your input','$' STR2 DB 0DH,0AH,'The number of chars:','$' STR3 DB 0DH,0AH,'You hab NOT input any letter','$' HUICHE DB 0DH,0AH,'$'