... '9','?','&',' ','.','/', ';',' '}; char *p1, *p2; p1 = bang_chu; p2 = bang_so; clrscr(); // fprintf(stdprn,"\n\r"); do { status=inportb((int)&COM ... fprintf(stdprn,"%c",p1[ch]); } else { printf("%c" ,p2[ ch]); // fprintf(stdprn,"%c",(int )p2[ ch]); } }//end if((status & S_RxRDY) != 0) tiep: } while(ch!=0x02);//end ... II. Chöông trình: #include<dos.h> #include<graphics.h> #include<stdlib.h> #include<conio.h>...