House Targaryen is a former Great House of Westeros and was the ruling royal House of the Seven Kingdoms for three centuries, before it was deposed during Robert's Rebellion and House Baratheon replaced it as the new royal House. The few surviving Targaryens fled into exile.
PCD Explained. PCD stands for Pitch Circle Diameter. Also Known as Bolt Circle Diameter (BCD). The Bolt Circle Diameter (BCD) (or Pitch Circle Diameter - PCD) is the diameter of the circle that passes by the center of the bolts. This is very easily measured on wheels with even number of bolts by measuring the distance between the center of two opposite bolts in mm.
SSD. Solid State Drive. A data storage device that uses nonvolatile solid state memory. These devices typically emulate a hard disk drive. TRIM. See definition. A computer command used by a SSD to inform it of data blocks in the SSD memory space that are no longer in use. This command allows the SSD controller to reorganize the memory space it is managing to allow any unused space to be optimally relocated.