Let say you want to collect the temperature from 4 sensors. In this example, I used fours of DS18B20. DS18B20 is a popular temperature sensor. Other options are the TMP35,36 family or a thermistor.
The wiring is included above. The DS18B20s share the wire (or bus), and here is the Arduino code on GitHub . The attachment in below file contains the codes and wiring map as well.
Also, install the USB driver for Arduino in Windows. Most ‘clone’ Arduino use CH340/CH341 USB driver. The driver is here.
Install driver, when plugging the Arduino to your Windows’ USB, it should recognize the driver and assign a COM port (mine is COM4)
The Serial Monitor should output like the photo below: