To determine the correct air/fuel mixture and the correct ignition timing, the PCM must know the atmospheric (BARO) pressure. If the PCM is to compensate for changes in altitude or weather, it must have an input signal that reflects these changes in atmospheric pressure.
As of 2009, XDR TB has not appeared in Indonesia, but it still remains a huge threat.i The fact that HIV positive individuals are more susceptible to TB infection is another difficult obstacle in containment. In fact, more than 50% of individuals living with HIV die from TB infection.
The explosion alone was heard as far west as Sumatra island, some 1,200 miles (2,000 km) away, and ash falls were recorded on the islands of Borneo, Sulawesi, Java and Maluku. Located along the Ring of Fire, Indonesia has about 400 volcanoes within its borders, with at least 90 still active in some way. The most active volcanoes are Kelut (which has erupted more than 30 times since 1000 AD) and Merapi (which has erupted more than 80 times since 1000 AD) on Java island.