Things to remember about the old office.

Welcome to the pdc web site.  Check out the new video added to the site. Down load a free calendar and try the software.

 Key Pad     

Using Numerical Key Pad:

1. Transfer keys are used to transfer from the X register to corresponding register. Information can also be moved from registers A through F to the X register. Click on the register this will move the number to the X register.
2. Subtract (- key) is used for subtracting the Y register by the X register.
3. Multiplication (* key) is used for multiplying the Y and X register.
4. Division (/ key) is used for dividing the Y register by the X register.
5. Addition (+ key) is used for adding the X and Y register. 
6. Numerical key pad used to input numbers in the X register 
7. Enter key moves information from the X register to the Y register.
8. X to Y key exchanges the X and Y registers. 
9. Clear key clears the X register. 
10. Clear Reg X To F key clears registers X,Y and if A through F.

The calculator uses reverse Polish notations. This means that you must input the first number and press enter. Input the number and then click on to selected function key.