Cool LED flasher for beginners!!

So you do already have a programmer and a pic microcontroller, but you don't have a project to work on. Here we start with a simple thing for beginners : LEDs. It's a very simple method to output a signal from a pic , and it would be great for your first project.
So what you will need:
-a pic microcontroller (i used PIC16F628 here)
-a 12k resistor
-2 resistors of 1k
-2 LEDs
-a bush button .
-some wires.
The circuit diagram:

Now the program(led_test.asm):

;************************************************************ 
; Processor: PIC16F628 at 4 MHz using internal RC oscillator 
; Function:  Flash a 2LEDs connected to RA2 and RA3 
; Author:    PIC DIY's
; Website:   http://www.pic-diys.blogspot.com 
;************************************************************ 


        LIST P=16F628, R=DEC    ; Use the PIC16F628 and decimal system 


        #include "P16F628.INC"  ; Include header file 


        __config  _INTRC_OSC_NOCLKOUT & _LVP_OFF & _WDT_OFF & _PWRTE_ON & _BODEN_ON 


        CBLOCK 0x20             ; Declare variable addresses starting at 0x20
          Loop1,Loop2 
        ENDC 
; 
; ----------- 
; INITIALIZE 
; ----------- 
; 
        ORG    0x000           ; Program starts at 0x000 

        CLRF   PORTA           ; Initialize port A 
        CLRF   PORTB           ; Initialize port B 

        BSF    STATUS,RP0      ; RAM bank 1 

        CLRF   TRISA           ; All pins port A output 
        CLRF   TRISB           ; All pins port B output 


        BCF    STATUS,RP0      ; RAM bank 0 
; 
; ------------------------ 
; FUNCTION OF PORT A PINS 
; ------------------------ 
; 
        MOVLW    7 
        MOVWF    CMCON         ; Comparators off, all pins digital I/O 
; 
; ---------- 
; MAIN LOOP 
; ---------- 
; 
Main    BSF     PORTA,2        ; Turn on LED connected to RA2 
        CALL    dilay
        BCF     PORTA,2        ; Turn off LED connected to RA2 
        CALL    dilay
        BSF    PORTA,2         ;Turn on LED connected to RA2
        CALL    dilay
        BCF    PORTA,2         ;Turn off LED connected to RA2
        CALL    delay
        BSF    PORTA,3         ;Turn on LED connected to RA3
        CALL    delay
        BCF    PORTA,3         ;Turn off LED connected to RA3
        CALL    dilay
        GOTO    Main 
; 
; --------------- 
; DELAY 120 MSEC 
; --------------- 
; 
delay   MOVLW   120 
        MOVWF   Loop1
; 
; --------------- 
; DiLAY 80 MSEC 
; --------------- 
; 
dilay   MOVLW   80 
        MOVWF   Loop1 
Outer   MOVLW   200 
        MOVWF   Loop2 
Inner   NOP 
        NOP 
        DECFSZ  Loop2,F 
        GOTO    Inner          ; Inner loop = 5 usec. 
        DECFSZ  Loop1,F 
        GOTO    Outer 
        RETURN 


        END
You can use the MPASM from Microchip to assemble the programme . It's easy and nice to work with.
After assembling the programme , burn it on your pic (PIC 16F628 used in this project). You can have a look on our simple pic programmer tutorail here.
Remarque: You can always use an usb cable to have a quick 5V. the red wire is the positive(5v) and the black one is the ground (-).
I guess that this is all what i got , any question you can comment on. You can follow my posts with e-mail.
Thank's for your attention guys!

Monta Ghanmy