MPC can refer to several different things, depending on the context. Here are some possible meanings of MPC:

1. MIDI Production Center: This is a line of samplers/sequencers designed by the Japanese company AKAI.

2. Mobile Passport Control: This is a program by the U.S. Customs and Border Protection that allows eligible travelers to submit their travel document, photo, and customs declaration information through a free, secure app on their smartphone or other mobile device. The use of MPC streamlines the traveler’s entry process into the United States by reducing passport control inspection time and overall wait time.

3. Model Predictive Control: This is an optimal control technique in which the calculated control actions minimize a cost function for a constrained dynamical system. In the simplest case, the general workflow to develop an MPC controller includes the following steps: model creation, controller design, simulation, and deployment.

4. Mirrored Palindromic Complement: This is a type of DNA sequence that reads the same backward or forward.

5. Marginal Propensity to Consume: This is the proportion of an increase in income that gets spent on consumption. MPC is a component of Keynesian macroeconomic theory and is calculated as the change in consumption divided by the change in income. MPC is depicted by a consumption line, which is a sloped line created by plotting the change in consumption on the vertical "y" axis and the change in income on the horizontal "x" axis.

Therefore, MPC can refer to different things depending on the context.