Ijjach almaɣna n awa id eqqalan darat awa fal ich-ikil n ismawan wi s axdaman Ifirjan win radio, ifirjan win television, ifirjan win taɣelit, ordinater tan, telefon tan win digital, pen tan win digital
Analog signal- radio waves, television waves, sound waves Digital signal- ordinater tan, telefon tan win digital, pen tan win digital