Pittsburgh (/ˈpɪtsbərɡ/ PITS-burg) is a city in the Commonwealth of Pennsylvania in the United States, and is the county seat of Allegheny County.
The piano is an acoustic, stringed musical instrument invented around the year 1700 (the exact year is uncertain), in which the strings are struck by hammers.
Pinyin, or Hànyǔ Pīnyīn, is the official romanization system for Standard Chinese in mainland China, Malaysia, Singapore, and Taiwan.
Pirates of the Caribbean is a series of fantasy swashbuckler films produced by Jerry Bruckheimer and based on Walt Disney's theme park ride of the same name.
The Pitcairn Islands (/ˈpɪtkɛərn/; Pitkern: Pitkern Ailen), officially Pitcairn, Henderson, Ducie and Oeno Islands, are a group of four volcanic islands in the southern Pacific Ocean that form the last British Overseas Territory in the Pacific.
Piracy is an act of robbery or criminal violence by ship- or boat-borne attackers upon another ship or a coastal area, typically with the goal of stealing cargo and other valuable items or properties.
A proportional–integral–derivative controller (PID controller) is a control loop feedback mechanism (controller) commonly used in industrial control systems.