integrated resistor การใช้

• Using domestic strained integrated resistor as weighing sensor , at89c52 single chip as control unit , combined with arithmetical magnification , analogtodigital conversion ( a / d ) , real time clock , liquid crystal display ( lcd ) , and series communication interface , a minitype automatic weighing lysimeter is developed . that made measurement of evapotranspiration become conveniently and effectively in studying on water use of crops