źródło: https://www.google.pl/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0CAUQjhw&url=http%3A%2F%2Fcommons.wikimedia.org%2Fwiki%2FFile%3AIntel_80486DX4_Pins_and_socket_3.jpeg&ei=0WBQVa7bJMr9ywOo6YHgDw&psig=AFQjCNFVbEZUtg7CZjXlCwbzAJVNE0pY7w&ust=1431417358710382
