Personal Communications Service 
Permanent Change of Station 
Personal Communications Services 
Personal Communication Services 
Permit Compliance System 
Physical Coding Sublayer 
Personal Computers 
Personal Communication Service 
Personal Communications System 
Portable Computer System 
Pointing Control System 
Personal Communications Systems 
Pressure Control Solenoid 
photon correlation spectroscopy 
Physics of Colloids in Space 
Pointing Control Subsystem 
primary control ship 
Process Control Systems 
Programmable Communications Subsystem 
Personal Communication System 
personal communication systems 
PERSONAL COMPUTER SYSTEM 
Power Conversion System 
Precision Control System 
primary coolant system 
process control system 
Production Control System 
Program Costing Staff 
Punched Card System 
Partitioning Communication System