Arduino port manipulation – part II

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In the first part I covered output of 8 LEDS using one port.

In this tutorial will use the port for input. Reading with one line of command the sate of 8 buttons.
Showing the difference in time it takes to perform this test.
Will also cover cool options of key combination, using the port output value.

I used WOKWI great web Arduino simulator the code from the video is available at

For WOKWI great article on time counting in Arduino

For more read about binary arithmetic and its practical uses in arduino
Some more info on ports in arduino
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