... SCANKEYPAD ;INPUT: PORT (ROW1 ROW4 -> P0.0 P0.3 & COL1 COL4 -> P0.4 P0.7) ;OUTPUT: C = 1: CO PHIM NHAN - ACC = CHUA MA PHIM (00H -> FFH) Giáo trình th c hành vi x lý 17 3 Biên so n: Ph m Quang Trí ... CLR RW ;RW = - WRITE LCD MODE SETB EN ;E = - ENABLE MOV DATABUS,#38H ;CODE = 38H - BIT, 16 CHAR/LINE, MATRIX 5x7 ACALL SENDCOMMAND ;GUI LENH RA LCD MOV TH0,#HIGH (-4 10 0) MOV TL0,#LOW (-4 10 0) ACALL ... ACALL DELAY ;DELAY 4.1MS MOV DATABUS,#38H ;CODE = 38H - BIT, 16 CHAR/LINE, MATRIX 5x7 ACALL SENDCOMMAND ;GUI LENH RA LCD MOV TH0,#HIGH ( -1 00) MOV TL0,#LOW ( -1 00) ACALL DELAY ;DELAY 10 0US MOV DATABUS,#38H...