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This is the Adafruit xCA9554 8-channel GPIO expander library, which works with both TCA9554 and PCA9554. These chips can act as push-pull outputs or inputs with very light pull-ups. This chip uses I2C ...

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including ...

Thermal printing is a non-impact printing method that uses heat to produce images or text on specially coated heat-sensitive paper, known as thermal paper. It prints by passing the thermal paper over ...