Initialism of pin grid array, a type of integrated circuit package, describing the electrical connections to circuit boards on which such a package is mounted
"The engineer inspected the pga pins to ensure proper alignment with the mounting holes in the circuit board."
In plain English: PGA stands for Professional Golfers Association, which is an organization that runs big golf tournaments and sets rules for professional players.
"The pga tournament attracted thousands of fans to watch the golfers compete in Florida."
Initialism of Professional Golfers Association.
"The PGA Tour has announced its schedule for next year's tournaments."