A microcomputer-based data acquisition and stabilization system is presented for piezoelectrically scanned plane-parallel Fabry-Perot interferometers which typically required some form of active stabilization system for long-term operation. The microcomputer takes the place of the programable ramp generator, multichannel analyzer, and stabilizer. The control algorithm developed here is workable against strong fluctuations of reference peak. Brillouin scattering spectrum from fused quartz is included to demonstrate the operation of the system.