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fx-180P计算器是一种多功能袖珍式计算器,除可进行四则、函数、统计、回归和定积分等运算外,尤其是它有38步程序步,可用来编制多种重复运算的数学模型的程序.利用程序运算,提高工效,计算结果准确.近年来,我们在森林资源调查中逐步应用了这种计算器,收到了良好的效果.随着该机的不断推广以及国营林场调查规划工作的全面开展,现把资源调查中几个常用的计算公式编成程序,供参考应用.程序运算的有关指令1.LRN状态:打开计算器的电源开关,按MODE O二个键.显示屏中出现符号“LRN”,并有P_1P_2在跳动,按一下P_1或P_2,显示屏中P_1或P_2静止不动,表示计算器处于程序编辑状态.这时,可以把事先写好的程序打入机内(必须注意,在这种状态不可进行键盘运算).程序打入机内之后,还要按MODE·两个键,这时显示屏中的LRN消失,表示计算器进入运算状态,可以调出P_1或P_2进行程序运算.也可以不调出程
fx-180P calculator is a versatile pocket calculator, in addition to the four functions, statistics, regression and definite integrals and other operations, in particular, it has 38 steps step can be used to compile a variety of mathematical math Model program.Using the program operation to improve ergonomics, the calculation results are accurate.In recent years, we gradually applied this calculator in the forest resources survey, and received good results.With the continuous promotion of the aircraft and the state-owned forest farm investigation and planning Work in full swing, now the resource investigation in several commonly used formula into a program for reference applications. Program Operation instructions 1.LRN state: Turn on the calculator power switch, press the MODE O two keys. Display Appears in the symbol “LRN”, and P_1P_2 in the beating, click P_1 or P_2, P_1 or P_2 in the display standstill, indicating that the calculator is in program editing state. At this time, you can put the pre-written program into the machine (Must be noted that in this state can not be keyboard operation.) After the program into the machine, but also press MODE · two keys, then the LRN disappears in the display, indicating that the calculator into the computing state, you can recall P_1 or P_2 Sequence operations. Recall process may not be