Notice: Undefined index: bandera in C:\xampp\htdocs\quimicasagal\index.php on line 5

Warning: include_once(./tipo_dispositivo.php): failed to open stream: No such file or directory in C:\xampp\htdocs\quimicasagal\index.php on line 11

Warning: include_once(): Failed opening './tipo_dispositivo.php' for inclusion (include_path='.;C:\xampp\php\PEAR') in C:\xampp\htdocs\quimicasagal\index.php on line 11

Fatal error: Call to undefined function dispositivo() in C:\xampp\htdocs\quimicasagal\index.php on line 13