Panel Os
Provides a step-by-step procedure for configuring the shell and UI in an OS design. This includes adding and removing shell and UI components, and customizing portions of the shell.

PAP Password Authentication Protocol
Check the user name and password to verify user identity approach.

Park Disk
Hard disk (HDD) read-write head (HEAD) of the homing movements to read and write heads remain in the landing zone (LANDING ZONE) to protect the read-write head and disk (DISK) will not move or fall due to collision between computers damage, the early hard drives need to manually issued commands to make read-write head can be relegated to the safety position known as the landing area, new hard disk turn off the power generated when using the reverse voltage to automatically read-write head positioning.

PARC Palo Alto Research Center
Palo Alto Research Center — is a premier source of innovation and scientific research for technology companies.