The TMCR (Total Ionizing Dose Measurement of COTS and Onboard Rad-Hard Components Mission) mission onboard a 1U CubeSat, BIRDS-4, attempts to measure the change in electrical properties of semiconductors due to the total ionization dose effects. The purpose of this mission is twofold. The first is to verify the accuracy of the TID tests conducted on the ground. The second is to validate the system to measure radiation dose from the change in drain current of Commercial-Off-The-Shelf MOSFET devices. Based on the measurement of 237 days in LEO orbit of 51 degree inclination and 400km altitude, no significant change in the drain current has not been observed yet.