Re: Lab 5

Ed Casas (edc@ece.ubc.ca) Wed, 29 Nov 2000 12:31:43 -0800 

Date: Wed, 29 Nov 2000 12:31:43 -0800
From: Ed Casas <edc@ece.ubc.ca>
Subject: Re: Lab 5



> I was wondering why a crystal and a capacitor was required for the chip in
> lab 4 and not in lab 5?
> 
> Is it that the push button in lab 5 acts as a clock which eliminates the
> need for the crystal?  

Yes.  The microcontroller has an internal oscillator that create
the clock signal.  The crystal sets this oscillator's frequency.

-- 
Ed Casas   edc@ece.ubc.ca   http://casas.ece.ubc.ca   +1 604 822-2592