PPI

The initials PPI have several meanings:

plan position indicator, a map-like display on cathode ray tube device for radar applications
Pixels per inch
Producer Price Index, a metric used in economics
Programmable Peripheral Interface
Parallel Peripheral Interface - a connection for driving LCD displays on processors such as the Blackfin
Progressive Policy Institute
Proton pump inhibitor, a type of heartburn-reducing medicine
Phonographic Performance (Ireland) Limited
Italian Popular Party
pp I, a branch of the Proton-proton chain reaction

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