REU project for CMS pixel Data AcQuisition Contact: Anders Ryd The CMS (Compact Muon Solenoid) experiment will start taking data in 2008 at the LHC (Large Hadron Collider) proton-proton collider at CERN. CMS is a multi-purpose experiment intended to study central collisions where we will look for many processes in the Standard Model (e.g. top and Higgs) and beyond the Standard Model (super-symmetry, extra dimensions etc.). Charged particle tracking in CMS is done with an all Silicon tracker. The Si-pixel detector is used for precise vertexing and seeding the track finding. It consists of three barrel layers with a radius from 4 to 10 cm, and two forward and backwards rings for tracks produced at small angles with respect to the beam axis. The pixel detector has a total of ~65M channels. At Cornell we have undertaken the task of developing software for the calibration of this detector.