Pic16f870

[skimask]

Internal, packaged in to the chip.
You only need to pull up the MCLR for Programming... Also keep in mind, this is on a full development board (Mikroelectronica EasyPIC 5) and not just placed in a breadboard with ICSP.

Ok, here's the next question....and it's going to be a tough one, I mean hard...You may have to study quite awhile to answer this one...

Which internal clock would that be on the PIC16F870?
(Ref: Pic16F870 datasheet, DS30569B-page 89)