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8 handy Raspberry Pi settings you can change (and how)

You can also change the time using the xset s [value] command, where [value] is the time in seconds. The default value is 600 ...
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APB4 General Purpose IO (GPIO)

The APB4 GPIO Core is fully parameterised core designed to provide a user-defined number of general purpose, bidirectional IO to a design. The IO are accessible via an AMBA APB v2.0 ...