The Continuous-Transition Kiln Schedules (CTKS) used in microcomputer control were developed. A series of trials were designed to dry various thickness lumber of Abies sp., Tsuga sp. and Quercus mongolica. Test results showed: by using microcomputer control system, CTKS are significantly effective in reducing the drying period and energy consumption without and additional degradetion as compared with the conventional schedules. The drying time and energy consumption for CTKS respectively were 16 percent and...