DP - Display Picture
Display Picture is used to represent the photo which gets displayed on the page of your social network profile like facebook or orkut. The abbreviation got popularity to to its frequent use while chatting and IMS.
There are lot of option available to change the display picture's background, cropping, contrast, brightness and many more in many social websites.
DP - Data Processing
Data Processing is a technique that uses a computer software to manage, analyze, calculate, process and store data. A wide range of software are available in the market to process the data like MS Word, PowerPoint, Excel and many more.