At 00:12 13/10/99 -0400, you wrote: >Hey if u plug in a pic chip specifically a 16c84 right out the packaging un programmed and wire it to +5v and mclr to +5v trough a 1k resistor and place a 4mhz crystale with two caps on it going to ground should the crystal be oscillating if u put a logic probe on it or no? cause my chip isnt. Im new to pic's.. > >Send someone a cool Dynamitemail flashcard greeting!! And get rewarded. >GO AHEAD! http://cards.dynamitemail.com/index.php3?rid=fc-41 > > [POT] PIC ON TOPIC No it will not, you have to set the OSC type, as by default if I remember (some one will correct me if I am wrong) the chip has the OSC set to an RC type Also you don't need to have a resistor connected to the MCLR pin Dennis