Some calculators are very used. First example from what can be found.
Second exemple; one advantage is that these calculators are cheap and that they are still working perfectly.
I'm daily using this one without fearing to damage it more !
I'll only replace it in it's daily use, the day I find a HP-15C in a similar poor state.
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| Introduction date | 01/09/1981 |
| End date | 1989 |
| Type | RPN Scientifique |
| Last update date | 2011_11_13 |
| Programmable | Y |
| RAM size | 63steps 20reg to 203steps 0reg |
| ROM size | |
| Number of functions | 107 |
| Alpha capabilities | N |
| Number of keys | 39 |
| Display type | LCD |
| Number of digits on display | 10.+indic |
| Graphical (X x Y) | N |
| Extention(s) | N |
| Printer | N |
| Saving | mem |
| Date or clock capabilities | N |
| Microprocessor | 1LE2 Sacajawea |
| Functions list | Scient |
| Size (length x width x thickness) | 128x79x15 |
| Weight | 110gr |
| Batteries | 3x1,5Vcell |
| External power | N |
| Power consumption | |
| Twin | |
| Made in | USA |
| Link(s) | HP-11C disassembly |
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Hewlett-Packard 11C aka Voyager 1.0 (8 pictures)