This is an alphanumeric keypad that allows the generation of a query and in this way you can send commands to the data processing system, but also allows that the user enter additional information and modify it .
If you modify the query this is not going to be stored, so every time that you access this modification they are going to come down to a list and then it will let to go to those modification, guiding through the process at the very moment step by step in an easy way.








