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HP-28S
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| Codename: |
Orlando |
| Family: |
Clamshell |
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| Introduction Date: |
Januar 4, 1988 |
| Introduction Price: |
$235 |
| Discontinuation Date: |
April 1, 1992 |
| Discontinuation Price: |
$195 |
| Type: |
Scientific, Solver, Programm. |
| Logic: |
RPN |
| Made in (known): |
USA, Singapore, Brasil |
| Display: |
LCD, 137 x 32 Pixels |
| ROM: |
128 Kilobytes |
| RAM: |
32 Kilobytes |
| Processor: |
Saturn Lewis, 1 MHz |
| Size (closed): |
16,5cm x 9,2cm x 1,8cm |
| Weight: |
227 gramm |
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| Notes: |
- ROM-Versions: 2AA (Proto), 2BB (all versions begin with a 1 are HP28C ROM's)
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