ADC Converter

This ADC Converter is an analog to digital converter circuit based on 
ADC0820 (or the compatible TLC0820).  You can build it on wire wrap/hand 
wire board, Proto Board, or on a PCB.  The 5VDC power can be drawn from 
the computer.  


Parts List:  
	
IC - 74HC257  		(Radio Shack #900-3486)  $0.58
IC - ADC0820  		(Radio Shack #900-6778)  $4.89
Resistor - 10K  	(Radio Shack #900-0170)  $0.07
Resistor - 10K  	(Radio Shack #900-0170)  $0.07
Resistor - 100K  	(Radio Shack #900-0290)  $0.07
Zener Diode - 1N4733A  	(Radio Shack #900-3018)  $0.11
Diode - 1N4148  	(Radio Shack #900-2908)  $0.15

You will also require a MALE DB25 (parallel port) plug.

