This work proposes electro-optical design of logic gates using micro-ring resonators (MRR). We achieve this through various combinations of MRRs. In order to modulate the rings, thermo-optic effect is utilized. The reported devices are completely CMOS-compat- ible and can be fabricated using existing technologies. We also provide static responses to explain the device working principles. By plotting dynamic response spectra, the per- formance of each device is examined. The proposed logic elements are able to operate at 0.4 Mbps.