With this code is blinking LED no.1 and 4.
Code:
'16F690 DEMO
  '  
    DEFINE OSC 8       'Comment the 4Mhz and uncomment these for 8Mhz
    OSCCON=%01110000

    DEFINE OSC 4           'This is the default setting
    OSCCON=%01100000
      
    @ device  pic16F690, intrc_osc_noclkout, wdt_on, mclr_on, protect_off
  
     TRISC = %00000000   '0 will make the pins an output, 1 will make them inputs
     'VARS
    LED1    VAR PORTC.2
    LED2    VAR PORTC.3
    START:
    HIGH LED1
    LOW  LED2
    PAUSE 250
    LOW  LED1
    HIGH LED2
    PAUSE 250
    PORTC = %00000001
    PAUSE 250
    PORTC = %00000010
    GOTO START