Department of Public Safety 
Data Processing System 
Descent Propulsion System 
Digital Production System 
Departure Procedures 
Data Processing Subsystem 
Damage Per Second 
Data Processing and Software 
Data Processing Set 
disintegrations per second 
Dividend Per Share 
Double Page Spread 
Data Preparation Subsystem 
Data Providers 
Decision Points 
Defense Planning Scenarios 
Defense Policy and Strategy 
Defense Printing Service 
Defense Priorities System 
Defense Protective Service 
Descent Power System 
Design and Performance Specification 
Differential Phase Shift 
Digital Passage Service 
Digital Protection Switch 
Directorate of Purchase & Stores 
Disk Programming System 
Distributed Parameter Systems 
Dividends per Share 
Document Processing System