The Intel 8051 series of 8-bit microcontrollers is long-discontinued by its original manufacturer, but lives on as a core ...

The circuit diagram is simple and easy to understand ... The RF transmitter module was powered with 5V, just like the sensor network. The 12th pin was connected to the data pin of the transmitter ...

as shown in the provided circuit diagram, which utilizes four 7400-series NAND gates. The 7400 chip contains four 2-input NAND gates, each with inputs (e.g., pins 1 and 2) and an output (pin 3). In ...

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