Is the human race so dependent on computers?

Today, I went to Friendly's. After we ordered and ate the first part of our meal, we wanted ice cream. After all, doesn't ice cream make the meal? Anyways, the computer for recording the orders froze. When the waitress came over to us, she said that she didn't think she could take our ice cream orders. My grandmother's friend Terry suggested that she could write it down. The waitress did, but got my order wrong. Then, the waitress tried to get our receipt, but the computer was still not acting up. She came back about 10 minutes later with the check. It is my belief that without computers, the average human who uses a computer on a daily to weekly basis would not be able to function. This begs the question: Are humans totally dependent on computers?