PIC or Peripheral Interface Controller is a one-chip microprocessor. In this guide, you will learn details of using such PIC microcontroller to build your own custom project.
http://www.hobby-elec.org/e_pic.htm
The prototype has power consumption of 0.5 mA running with the video cable disconnected from the TV set, and 4.5 mA when the cable is connected. So most of the power goes to drive the 75 ohm video line.
http://hyvatti.iki.fi/~jaakko/pic/pong/
Here is some code to allow you to use a serial terminal to read and write to the PIC's registers and EEPROM.
http://www.dougrice.plus.com/hp/freq/freq.htm
The routines described here read the position of a potentiometer by a ratio technique. The measured value is scaled to a value between 0 and max, using a successive approximation technique.
http://www.btinternet.com/~doug.h.rice/vtmr/read_pot.htm
In this small example the left pic has a counter and sends the value of that counter over one single wire to the other pic.
http://members.home.nl/b.vandam/lonely/pagina30.html
If pic1 sends a message to pic2 it will remain in pic2s buffer until pic2 gets around to checking for messages. So all I needed to do was send a message and wait for an answer in one pic, and the reverse in the other.
http://members.home.nl/b.vandam/lonely/pagina15.html
With this microcontroller it is much easier to connect a switch, because it has dedicated digital i/o ports (b and c).
http://members.home.nl/b.vandam/lonely/pagina6.html
Auto modification of software means that a computer (PC) changes (and downloads) pic software automatically into a pic. This means a pic can be re-programmed without human intervention.
http://members.home.nl/b.vandam/lonely/pagina17.html