"Technical Regulations, Article 8.2
"8.2 Control electronics:
8.2.1 All components of the engine and gearbox, including clutch, differential and all associated actuators must be controlled by an Electronic Control Unit (ECU) which has been manufactured by an FIA designated supplier to a specification determined by the FIA. The ECU may only be used with FIA approved software and may only be connected to the control system wiring loom, sensors and actuators in an manner specified by the FIA."
IMPACT: The introduction of the Microsoft-MES SECU (Standard Electronic Control Unit) marks a significant change for the ING Renault F1 Team, which previously used the Magneti-Marelli Step 11. In technical terms, the SECU is about half as powerful as the outgoing system, with a quarter of the memory. The SECU package is composed of six units, with a weight gain of over 35 percent compared to the previous system. The introduction of the SECU eliminates a number of control systems, including traction control and EBS (engine braking system). In total, the loss of these systems will cost up to 0.4s per lap."

Someone PLEASE tell me it's not the same Microsoft I'm thinking about.