How do you change the date/time on a sharp el-1801pIII calculator

SOURCE: cant change time/date

Hope this helps

SOURCE: I need to change the time on my Sharp EL-1750PIII calculator

You can access the .pdf manual for your particular calculator here:

http://www.sharpusa.com/files/cal_man_EL1750PIII.pdf

Page 1 for how to set date/time:

“RATE SET”: To set the date, time, and tax rate, set this switch at the “RATE SET” position.
Date:
• Enter in the order of month, day and year, then press to complete the entry.
• Use to separate month, day, and year.
• When is pressed, the number entered is evaluated and displayed as “date” if the
value is within the following range; “Error” is displayed otherwise, and the previously set
date is restored.
Month: 1 - 12; day: 1 - 31; Year: 2000 - 2099 (in 4 digits) or 00 - 99 (in 2 digits)
Time:
• Enter in the order of hour, minutes, then press to complete the entry.
(There is no entry available for the seconds value. The clock starts at zero second.)
• If the hour/minute digit is less than 10, it is not necessary to enter the first digit “0”.
• Use to separate hour and minute values.
• When is pressed, the number entered is evaluated and displayed as “time” if the
value is within the following range; “Error” is displayed otherwise, and the previously set
time is restored.
Hour: 0 - 23 (24-hour system for the hour entry), Minute: 0 - 59

SOURCE: How do I set the date on Sharp EL-1801Piii

Adjusting the tiome is just like adjusting the date, owith the only difference that you just enter two values (hours and minutes):

1. Move the Grand Total/ Rate Setting mode selector to the "Rate Set" "position
2. Enter the time in the orde of hour, minutes (use a point to separate the two values) and then presse the [Clock/Calendar] button to complete the entry.
You may also want to download the SHARP EL-1801PIII OPERATION MANUAL

SOURCE: how to set date and time on sharp el-1801pIII

User guide is here ...

http://safemanuals.com/user-guide-instructions-owner-manual/SHARP/EL-1801PIII-_E

Instructions are halfway down column 1.
Basically, you use the reset button on the back, then enter the relevant fields, delimiting as with a period <.>

I think their illustration explains it better than I can in words!

SOURCE: To change the Date and

GRAND TOTAL / RATE SETTING MODE SELECTOR:
"GT": Grand Total
"•": Neutral
"RATE SET": To set the date, time, and tax rate, set this switch at the "RATE SET" position.
Date:
• Enter in the order of month, day and year, then press to complete the entry.
• Use to separate month, day, and year.
• When is pressed, the number entered is evaluated and displayed as "date" if the
value is within the following range; "Error" is displayed otherwise, and the previously set
date is restored.
Month: 1 - 12; day: 1 - 31; Year: 2000 - 2099 (in 4 digits) or 00 - 99 (in 2 digits)
Time:
• Enter in the order of hour, minutes, then press to complete the entry.
(There is no entry available for the seconds value. The clock starts at zero second.)
• If the hour/minute digit is less than 10, it is not necessary to enter the first digit "0".
• Use to separate hour and minute values.
• When is pressed, the number entered is evaluated and displayed as "time" if the
value is within the following range; "Error" is displayed otherwise, and the previously set
time is restored.
Hour: 0 - 23 (24-hour system for the hour entry), Minute: 0 - 59