Replacement of the HP15C
Are you looking for a replacement of the Hewlett-Packard HP15C calculator?
Then look no further, check out the following replacement I found, its the DM15L from swissmicros
I had the HP15C for years and I can not find it, I searched everywhere. So after looking at eBay, Amazon and so on with these prices for a 30+ years old calculator, I started looking for a replacement and a good friend of mine just said “swissmicros”. Well I looked it up and found it. 2 Days later it arrived in the mail.
To setup the time & date:
[SST] +[ON] (start time/date adjustment) , use [/], [x], [-], [+] to change and [ENTER] to set
Currently in December 18, we adjusted the clocks in the house (Spring forward, Fall back)
So for the calculator I checked [A]+[ON] and the clock was 1h ahead. Easy to fix: Just hold [STO]+[ON] to adjust the time “-1 HOUR”. You can also repeat the Step several times if needed.
| Year | Daylight Saving Time Begins | Daylight Saving Time Ends |
| 2018 | Sunday, March 11 at 2:00 A.M. | Sunday, November 4 at 2:00 A.M. |
| 2019 | Sunday, March 10 at 2:00 A.M. | Sunday, November 3 at 2:00 A.M. |
| 2020 | Sunday, March 8 at 2:00 A.M. | Sunday, November 1 at 2:00 A.M. |
Here a few special options
There are several websites that show you how to program this little calculator. Did I mention that you can program the DL15L the exact same way you did with the HP15C.
If you want to upgrade the firmware of the SwissMicros DM15L then take a look at the following post
