Problem Statement Summary:

The task is to create a MATLAB program that simulates a highway emergency alert sign using a dot matrix font. The program will take user input and display it in a $4-$row, $17-$column format, using $5$x$7$ dot matrix characters. The purpose is to replicate the text display used in highway signs $($like "Road Closed" or "Amber Alert"$).$

Key Requirements:

Input Handling:

The user must input text $($in uppercase letters only$).$The input must be validated to ensure it fits within a sign that has $4$ rows and $17$ columns.If the input exceeds the boundary, the program should prompt the user for valid input.

Character Representation:

Each character $($A$-$Z$,$ and any other supported characters$)$ should be represented in a $5$x$7$ dot matrix $(5$ columns by $7$ rows$).$The program should center the text as much as possible in each row.

Functions:

Input Validation: One function will prompt for and validate the user's input $($ensuring only valid characters and that the text fits within the boundaries$).$Text Display: Another function will take the valid input and display it in the $5$x$7$ dot matrix format, ensuring each character fits the designated size.

Program Structure:

The program should have at least two user$-$defined functions:

A function for input validation $($checking if the text is uppercase, within the character limit$,$ and using only allowed characters$).$A function to display the input in dot matrix format.

Output:

The output will be displayed as a series of $5$x$7$ matrices, representing each character in the input.The output must be formatted to fit the $4$x$17$ highway sign display.

Test Cases:

The program must work with multiple test cases, such as:

"Amber Alert""Colorado County""Gold Chevy Yukon""Weather Alert""Moose is Loose!"

Coding Requirements:

Character Matrices: Each character should be represented by a $5$x$7$ matrix of $1$s $($for dots$)$ and $0$s $($for spaces$).$

Loops: Use for loops for iterating over characters and rows to display the dot matrix output.

Input Validation: Use a while loop to ensure the user provides valid input.

Display: Use disp or fprintf to display the matrix output in a readable format.