Orders can be written on checks, which are duplicated and sent to the kitchen. If you are writing orders by hand, your handwriting must be legible and simple to read. Always use the proper abbreviations; don't develop your own; the kitchen won't comprehend them. It is best if you write the entire order including items, quantities, and prices. This makes it easier for the cook to follow your instructions and avoid making mistakes. The kitchen keeps track of orders by using a special computer program called an abacus. You input the information about each order into the computer using keyboard commands. The abacus then calculates the amount of time it will take for the cooks to prepare your meal based on their experience level and current workload. It also prints out a list of all the ingredients needed for your meal. Finally, it prints out a check for payment. The abacus can be found in any major restaurant's kitchen.