The meaning of the Acronym PCS is...

PCS is

• Predefined Command Sequence
• Procedure Completion Sheet
• Primary Coolant System
• Pressure Control System
• Power Conversion System
• Portable Computer System
• Pointing Control System
• Payload Control Supervisor
• Payload Checkout System

More Meanings For PCS:

• Portable Character Set
• Animated PICTs (Macintosh)
• Picture package (MS PowerPoint - MS ClipArt Gallery)
• Personal Communication Services
• Personal Computer Service
• Permanent Control Security
• Please Contribute Some ....
• Picture Coding Scheme
• Personal Communications Services
• Personal Communication System
• Personal Communication Service
• Plastic-Clad Silica
• Poor Cellular Service
• Pretty Cool Summer
• Pretty Crappy Signal

PCS is also in:

• Amateur Radio
• Assembly
• Chat
• File Extensions
• General
• Security
• SMS
• Software
• Telecom