Drawing is a very important link of digital processing in geophysical prospecting.
绘图是物探数字处理中极其重要的一个环节。
Handheld personal digital processing system, realize the mail list, calendar, calculator, electronic drawing board function.
说明：掌上个人数字处理系统，实现通讯录、日历、计算器、电子画板功能。
The main purpose is digital processing of the input intermediate frequency pulse signals, drawing the detail characters of the pulse signals, so that distinguishing me from enemy.
其主要目的是对中频输入脉冲信号进行数字化处理，提取信号的细微特征，从而达到识别敌我目的。
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