Resumo

CAMERO-BERRONES, R.G. et al. Desarrollo de un sistema para medir tiempos en experimentos de movimiento rectilíneo. Rev. mex. fís. E [online]. 2012, vol.58, n.1, pp.18-23. ISSN 1870-3542.

It was developed a system to measure times using photo gates and a computer's sound card on rectilinear motion experiments. The movement sensors were connected to the computer through a XOR logic gate array, the signal from the sensors was fed to the computer's sound card input line. MATLAB was used to acquire and processing data and a specialized add-on software activated the hardware to read the signals produced by the photo gates. The system developed can be built with low cost items and it was tested with two different setup to evaluate and compare theoretical versus experimental data resulting in good agreement.

Palavras-chave : Computer education; learning theory; physics laboratory in high school.

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