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Modifique os códigos para que o display, com decodificador CD4511, mostre os dígitos de 0 a 7 correspondendo aos pinos da porta B acionados pelos push buttons. Monte o circuito, grave o microcontrolador e ajuste as conexões, incluindo resistores pull up/pull down.
This project is an Automatic railway gate at a level crossing and its primary purpose is to replace the gates operated manually by the gatekeeper to reduce and avoid accidents by detecting the arrival of the train using sensors placed near the gate that greatly reduced the operating response time.