vii
7. Error Messages .....................................................................................................254
8. Sample Program ...................................................................................................254
(1) Conversion of temperatures from Celsius to Fahrenheit ................................. 254
(2) Random substitution of numbers ..................................................................... 256
CHAPTER 13 OPTION FUNCTIONS ......................................................................... 259
1. Adjusting Screen Contrast .....................................................................................259
2. Checking Memory Usage ...................................................................................... 259
3. Deleting Files .........................................................................................................260
4. Link Function .........................................................................................................261
(1) To link with another EL-9650 (Communication between EL-9650s) ................ 261
(2) Data communication between the EL-9650 and a Personal computer............ 263
5. Reset Function ......................................................................................................263
(1) When trouble occurs ........................................................................................264
APPENDIX ..................................................................................................................265
1. Replacing the Batteries .........................................................................................265
(1) Battery precautions ..........................................................................................265
(2) Replacing the operating batteries ....................................................................265
(3) Replacing the memory backup battery ............................................................ 266
2. Specifications ........................................................................................................267
3. Error Codes and Error Messages ..........................................................................270
4. Calculation Equation Error Conditions Used by This Unit .....................................272
(1) Financial ...........................................................................................................272
(2) Error conditions during financial claculations ................................................... 274
(3) Distribution function .........................................................................................274
5. Calculation Range ................................................................................................. 276
6. Explanation of EL-9650 menus .............................................................................282
EL-9650-Contents 8/1/00, 9:44 AM7