Music mix with voice in 5minutes : tutorial video


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schematic Quickpost this image to Myspace, Digg, Facebook, and others! code working: If you press any button in the matrix keyboard it controller will scan the corresponding ascii code that will send serially to the port pin specified . Corresponding ascii code we can see in LED blinkings. #include /* add the headers here */ #define COL P2 #define ROW P1 void msdelay(unsigned int value); void sertx(unsigned char); unsigned char keyboard[4][4]={ '7','8','9','/', '4','5','6','*', '1','2','3','-', 'a','0','=','+' }; void main() { unsigned char colloc,rowloc; TMOD=0x20; TH1=-24; SCON=0x50; TR1=1; COL=0xff; while(1) { do { ROW=0x00; colloc=COL; colloc&=0x0f; } while(colloc!=0x0f); do { do { msdelay(20); colloc=COL; colloc&=0x0f; }while(colloc==0x0f); msdelay(20); colloc=COL; colloc&=0x0f; } while(colloc==0x0f); while(1) { ROW=0xfe; colloc=COL; colloc...
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Nokia dot Matrix LCD Interfacing with 89c51( 8051 core)

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The Nokia 3310 LCD is based on a PCD8544 48x84 pixels matrix LCD controller Pin Diagram given above .. Schematic: ---------------------------- AT89C51 PROGRAM CODE ;Program for Nokia 3310 LCD PCD8544 48x84 pixel SCK BIT P1.7 SDIN BIT P1.6 D_C BIT P1.5 SCE BIT P1.4 RES BIT P1.3 ORG 0000H AJMP MAIN ORG 0030H MAIN: MOV SP,#60H MOV P1,#00H CLR C CALL RESET CALL LCD_INIT HERE: CALL CLEAR_RAM MOV DPTR,#MESSAGE CALL LCD_STRING CALL DELAYS CALL CLEAR_RAM MOV DPTR,#IMAGE CALL DISPLAY CALL DELAYS AJMP HERE DELAYS: ;1s DELAY MOV R5,#10 D1: CALL DELAY DJNZ R5,D1 RET DELAY: ;100ms DELAY SETB PSW.4 MOV R7,#200 HDH: MOV R6,#100 HD: NOP NOP NOP DJNZ R6,HD DJNZ R7,HDH CLR PSW.4 RET RESET: ; RESET SETB SCE SETB RES CLR RES CALL DELAY SETB RES RET LCD_INIT: ;INITALIZE LCD MOV DPTR,#LCDCODE1 CALL LCD_IN CALL CLEAR_RAM MOV R1,#00H ;Y MOV R2,#00H ;X CALL CURSOR RET LCD_IN: MOV A,#00H MOV R6,#00H LOOP3: INC R6 MOVC A,@A+DPTR CJNE A,#2FH,NEXT3 RET NEXT3: CALL LCD_COM MOV A,R6 AJMP LOOP3 DISPLAY: ;DISPLAY IMA...
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