徐勝一陳國彥丘逸民2014-10-272014-10-271988-03-??http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/23643A data-logger designed for physical geography in field-study is introduced in this article. It uses either A. C. or D. C. power and is equipped with nine input channels and nine sampling time-periods. A replaceable memory cartridge used in this data logging system is a special feature that makes data recording easy either in a mobile (short-term) observation or in a fixed-point (long-term) operation.The specially designed memory cartridge also makes the collected-data easy and convenient for process when it is linked up with a personal computer. On account of its low-cot manu?facturing expenses and its data-process efficiency for academic research, the machine structure and its operation procedure become worthwhile to be introduced for examination.地理自然野外實習