Casio fx 3650P

Modes

The calculator is available in 6 modes:

Basic arithmetic calculations

Complex number calculations

In this mode, if the result have both real and imaginary part, an "R↔I" symbol will appear at the top-right corner.

Standard deviation calculations

This mode is for statistical calculation. For some input data, sum of squares of values (Σx²), sum of values (Σx), number of data (n), sample standard deviation (xσn-1) and population standard deviation (xσn) can be calculated.

Regression calculations

This mode is for statistical calculation and can be divided further into

For some input ordered pairs, one of the below can be calculated. (The availability differs from modes.)

Σx², Σx, n, Σy², Σy, Σxy, x ¯ , xσn, xσn-1, y ¯ , yσn, yσn-1, Regression coefficient A, Regression coefficient B, Correlation coefficient r, x ^ , y ^ , Σx³, Σx²y, Σx⁴, Regression coefficient C, x ^ ₁and x ^ ₂

Program

The calculator can hold up to 4 programs with total capacity of 360 bt Program commands:

Conditional jumps

Conditional jumps should be used in the syntax:
condition ⇒ statement 1:statement 2
When condition is true, statement 1 is executed, then statement 2 is executed. If condition is false, statement 1 is skipped and statement 2 is executed.

E.g.: ...A=0 ⇒ A+1→B:C+5→D:... If A=0, both A+1→B and C+5→D is executed. If A≠0, only C+5→D is executed.

Unconditional jumps

Unconditional jumps uses Goto and Lbl to operate.

When Goto n (where n is an integer in 0-9) is executed, the program will jump to Lbl n. Loops can be created with unconditional jumps.

System check

The calculator will perform system check when shift, 7 and ON is pressed together. The system check have 3 parts.

Part 1: light check - All lights will be on when the system check is initiated, press shift then all lights will be off. Press shift to proceed. The next 2 screens have similar functions.

Part 2: display check - The dot matrix screen will display "24      PRG13" and the LCD screen will display "0000000000 ⁰⁰". Press shift to proceed. Then the display become "BBBBBBBBBB" and "1111111111 ¹¹". Then "CCCCCCCCCC" and "222222222 ²²" and so on up till "JJJJJJJJJJ""9999999999 ⁹⁹". Press shift to proceed to part 3.

Part 3: key check - Press shift, the LCD will display 1. Press alpha, up, down, left, right in order. The display will increase by 1 each time you press a button. Next, press MODE, prog, ∫ dx, x⁻¹, x³, and so on up till Ans. When EXE is pressed, the display become "24      OK""13"(The display differs from version, the above is for version 4 of the calculator which is the latest version). Press ON to end the system check.