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.
Although DOTS has vastly improved the TB problem in Indonesia, the program needs to be effectively implemented in the eastern regions of Indonesia and Sumatra and needs to focus on fighting MDR TB and the TB/HIV co-infection problem.
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.