I often use pizza hut to order pizza online. With a phone call they easily know someone may want to order from them. I wonder how they get alerted of an order I place online. I wonder if they hear something or what. Anyone know what makes pizza hut know I placed an online order?|||Maybe they have to keep checking the computer? Or another possibility would be that a buzzer goes off, um...maybe the order just appears on a screen in the kitchen:) Good Question!

火车采集器