The Arduino Uno is a microcontroller board based on the ATmega328 (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.
Some time it is very difficult to setup the temperature monitoring system for Arduino Uno. Here you can find information about how to setup your basic Arduino Uno temperature web monitoring
. It uses the Exosite library to set up a connection to the Exosite One Platform over Ethernet, reads the temperature over the one-wire interface, and sends the value to the platform every 120 seconds with the Basic HTTP API from Exosite.