Boiler monitor: Over the following three chapters, we will create an app that monitors the temperature and pressure of a boiler. You can model the app based on the Thyroid app. In this chapter, we will create the skeleton of the app, similar to the Thyroid app. Now, just create the pages and the links to navigate between them; you will implement the functionality of the pages in later chapters. The app will have

A password$-$based entry page.

A page to get basic information about the boiler such as the boiler ID$,$ date of purchase, maximum allowable values of pressure and temperature, and an ability to change the password.

A menu page with four choices

An option and corresponding page to allow you to change the basic information about the boiler.

An option and corresponding page to enter data$$temperature and pressure.

An option and corresponding page to graph the data.

An option and corresponding page to make recommendations based on the values of temperature and pressure.