可編輯編輯, 保存運算過程, 可計算複數, 統計及繪圖!

輸入長長的計算式時，修改非常方便 ！
就像是在記事本中寫算數題一樣 !
可以計算複數、科學計算、函數作圖、統計計算、積分計算 ！
• It Supports the File Management !
      該計算器支持完整的文件管理系統 !
       - Create a file
          創建
       - Save
          保存
       - Open
          打開
       - Delete
          刪除
• Mathematical Functions:
     數學函數
    SIN(X) : sine of x
    COS(X) : cosine of x
    TAN(X) : tangent of x
    COT(X) : cotangent of x
    ASIN(X) : arcsine of x
    ACOS(X) : arccosine of x
    ATAN(X) : arctangent of x
    SINH(X) : hyperbolic sine
    COSH(X) : hyperbolic cosine
    TANH(X) : hyperbolic tangent
    ASINH(X) : inverse hyperbolic sine
    ACOSH(X) : inverse hyperbolic cosine
    ATANH(X) : inverse hyperbolic tangent
    SQRT(X) : square root of x
    ABS(X) : absolute value of x
    FCT(X) : x factorial
    LOG(X,Y) : logarithm of y to base x
    LN(X) : natural logarithm of x
    LOG(X) : base-10 logarithm of x
    LOG10(X) : base-10 logarithm of x
    LOG2(X) : base-2 logarithm of x
    EXP(X) : base-e exponential of x
    ERF(X) : the error function of x
    ERFC(X) : the complementary error function of x
    ROUND(X) : integral nearest to x
    CEIL(X) : the smallest integral that is not less than x
    FLOOR(X) : the largest integral that is not greater than x
    TGAMMA(X) : the gamma function of x
    LGAMMA(X) : the natural logarithm of the absolute value of the gamma function of x
    X^Y : y-th power of x
• Statistical functions:
統計函數
    SUM(a1,a2,a3,a4) : a1+a2+a3+a4
      求和
    AVERAGE(a1,a2,a3,a4) : (a1+a2+a3+a4)÷4
      求平均數
    VARIANCE(a1,a2,a3,a4) : variance
      方差
    SD(...) : standard deviation
      標準差
    SUMSQ(...) : sum of squares
      平方和
    AD(...) : absolute deviation
      絕對方差
    CV(...) : coefficient of variation
      變異係數
    SVARIANCE(...) : sample variance
      樣本方差
    SSD(...) : sample standard deviation
      樣本標準差
    SCV(...) : sample coefficient of variance
      樣本變異係數
• Help Manual:
   幫助文檔
“//” 指註釋。被註釋的語句不執行。
            A=2
            B=3
            C=A+B
  Click “Run”, the screen shows:
            C=5
  If the line C=A+B is annotated ,
             A=2
             B=3
             //C=A+B
  Click “Run”, the screen shows:
             B=3
- Variable Naming Rules:
    變量名命名規則：
   Start with letters, and not involving keywords.
    需字母開頭。不得包含關鍵字。
             A, A1, B25, HAT (對)
             PRINT1, COS (錯)
- The Usage of PRINT:
   PRINT 關鍵字的使用方法：
              A=10+5
              B=10/5
              PRITN A,B
  Click “Run”, the screen shows:
              A=15
              B=2
  Default variable name is RESULT , e.g.
  如果數值沒有被命名，則默認名為“ RESULT”
              16+5*6
  Click “Run”, the screen shows:
              RESULT=46
- Combination & Arrangement:
   排列組合
              C(n,k) = n!/(k!(n-k)!)
              排列
              A(n,k) = n!/(n-k)!
              組合
- Complex Number
   複數
    當屏幕中出現“i” 或 “∠”時，系統會自動進入複數計算模式。
               e.g. X=3+4i or X=5∠53.1°
    只有下面9個函數可用於復數計算
                SIN(X), COS(X), TAN(X)
                COT(X), SINH(X), COSH(X)
                SQRT(X), ABS(X), CONJUGATE(X)
- Integral
   積分
                 INTEGRAL X²,2,4
  Default precision is 300 times of calculations. It can be more accurate, e.g. 500 times.
  默認精度為300次。如果提高精度，可以修改。
                 INTEGRAL X²,2,4,500
- Graphics
   函數作圖
                  PLOT SIN(X)
                  PLOT X²
Default length = 10, width = 10. Specify the lenght = 20, width = 5. Then we have,
如果什麼都不寫，默認長度為10，寬度為10。可修改如下：
                  PLOT X²,20,5
Default dense is 150 points. It also can be customized, e.g. 200 points.
精度很可調整。
                  PLOT X²,20,5,200