... thoat vi khong phaiinc di ;neu dung thi kiem tra byte 0 thu 4mov al,[di] ;lay byte datacmp al,30hjnz kt_exit ;nhay den de thoat vi khong phaiinc di ;neu dung thi kiem tra byte 0 thu 5 mov ... ppexitpok_2_send:call con_hex ;goi chtr con chuyen sang so hexlea dx,buffrrmov cx, 256 call displaymov cx, 256 ;place in transmitter hoding register to sendmov dx,card_baselea di,buffrr ;tro ... rate:',0dh,0ahdb '1 = 110',0dh,0ahdb '2 = 150 ',0dh,0ahdb '3 = 300',0dh,0ahdb '4 = 600',0dh,0ahdb &apos ;5 = 1200',0dh,0ahdb '6 = 2400',0dh,0ahdb...