The TI-89 and the TI-89 Titanium are graphing calculators developed by Texas Instruments. They are differentiated from most other TI graphing calculators by their computer algebra system, which allows symbolic manipulation of algebraic expressions. For example, equations can be solved in terms of variables; the TI-83/84 series can only give a numeric result.

In the United States, the TI-89 is allowed by the College Board on all calculator-permitted tests, including the SAT, some SAT Subject Tests and the AP Calculus, Chemistry, Physics, and Statistics exams. However, the calculator is banned from use on the ACT, the PLAN, and in some classrooms. In many testing situations, the TI-89 and TI-89 Titanium, along with the HP-49 series, are the most powerful and function-rich graphing calculators that are permitted: the TI-92 series, with otherwise comparable features, have QWERTY keyboards that cause them to be considered small computers.[1]



这儿是介绍 http://en.wikipedia.org/wiki/TI89

貌似现在的小兔崽子们都用这个了。回想当年俺们只能老老实实拿笔算啊~~~
昨天心血来潮买了台。今天到货了。做工一般般，操作有点小复杂。但熟悉之后发现真是他娘的方便啊~~~
当年要有这玩意儿，俺高数何至于挂啊~~~~~

不知道有好这口的兄弟没有~~~:D :D

我记得02、03年那时候，上海高中就已经全部标配某款卡西欧数据型计算器，高考也只能用这种

是的，俺那时候辅导俺妹数学，发现居然他们已经可以使用计算器考试了！！！着实一惊~~~

记得俺念中学时候学校里教过一段计算器，但明确考试不能使用。

TI这款能算积分，能算物理公式，还能作图，还能电路分析。
工科学生幸福之花啊~~~~

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又查了一下，TI图形计算机已经在上海高中里面广泛使用了。。。。

眼泪哗哗的~~~~
俺也开始用！！

这就叫与时俱进~~~咔咔:D :D

可见现在学生压力之大..................

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我靠，高中就需要这么高级的计算器么？

高中生用的应该是TI-84吧。

89这类都是给大学工科学生和工程师用的

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ds上有个科学计算器模拟器，基于ti83的…

本帖最后由 sonic910623 于 2010-1-5 17:13 通过手机版编辑

palm上以前有HP 48G系列的模拟器。
当年还根本不知道怎么用。

这玩意儿还是专业点好

现在高中都用德州电器的ti系列了？不都用卡西欧的么？

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高数哪儿有高树好啊

手机上有hicalc，可以解方程算矩阵查公式画函数。。。。。

俺就想上学的时候有这玩意儿该多好啊。。。。。

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刚刚下了个ti83的模拟器，我的高数有救了…