EDI (electrical data ink).EDI is elcetricity and programing

imormation typed into computer then the program printer

prints data onto a chip or tape.

Led (light emiting diode) leds glow up by filament.

a filament glows up when electricity and electricity hit each other

a program printer uses EDI from the computer and then go's through

the data wire. then broght to the DC then it go's throgh small copper 

wires called elentrodes elentrodes are as thin as sewing thread.