The Charlemagne series
The Charlemagne series was introduced in 1990. This series of graphic calculators counts at the moment more than 15 models. . These calculators belong to the top of the calculators build by Hewlett Packard.
We can distinguish two series among the Charlemagne types. The series
HP- 48/49/50 are RPN calculators.
The series HP-38/39/40 have no RPN mode.
The top model at the moment is the HP-Prime. During the years the newer models have
got faster processors and more memory.
Almost all of these models have an infrared transmitter LED to
control the infrared thermal printer HP 82240A or HP
82240B.
The build a connection with a PC the older models uses a RS232 type serial link, the more recent
models uses USB.
The communication link can be used to upload or download programs or calculated
results. More information can be found here.
The HP 48/49/50 series
| Model | Code | Processor | RAM | ROM | SLOTS |
 |
|---|---|---|---|---|---|---|
| HP-48S | Shortly | Saturn Clarke | 32K | 256K | 0 |
|
| HP-48SX | Charlemagne | Saturn Clarke | 32K | 256K | 2 |
|
| HP-48G | Alcuin | Saturn Yorke | 32K | 512K | 0 |
|
| HP-48G+ | Alcuin | Saturn Yorke | 128K | 512K | 0 |
|
| HP-48GX | Hammer | Saturn Yorke | 128K | 512K | 2 |
|
| HP-48GII | Mid Apple | Arm9 - 75 Mhz | 128K | 512K | 0 |
|
| HP-49G | V'ger | Saturn Yorke | 512K | 2M | 0 |
|
| HP-49G+ | Apple | Arm9 - 75 Mhz | 512K | 800K | SD |
|
| HP-50G | Arm9 - 75Mhz | 512K | 2M | SD |
The models ending with an X have two extension ports for memory modules or
library cards.
Library cards for the X models
 |
| HP 82211A - Library card |
The HP-38/39/40 series
To compete with the popular graphical calculators from Texas Instruments and Casio, Hewlett Packard developed the HP-38/39/40 series. These models don't have the RPN input mode and no slots to extend the memory.
To help students to work with these graphical calculators, Hewlet Packard added Aplets to the HP-38/39 series. For the HP-40G CAS (Computer Algebra System) was introduced.
| Model | Code | Processor | RAM | ROM |  |
|---|---|---|---|---|---|
| HP-38G | Elsie | Saturn Yorke | 32K | 512K | |
| HP-39G | Enterprice | Saturn Yorke | 256K | 1M | |
| HP-39G+ | Little Apple | Arm9 - 75 Mhz | 256K | 2M | |
| HP-39GS | Arm9 - 75 Mhz | 256K | 2M | ||
| HP-39GII | Arm9 - 180 Mhz | 256K | 80M | ||
| HP-40G | Enterprice | Saturn Yorke | 256K | 1M | |
| HP-40GS | Arm9 - 75 Mhz | 256K | 2M |
Accessories
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The HP-48 models where sold in the nice soft pouch with a zipper. The newer HP-49 models and the HP- 38/39/40 models have plastic covers for protection. The HP-50 models are sold in a leather case. |
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Serial interface kit to link the HP-48 to a PC. For more information, click on the picture. |
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Infrared thermal printer HP 82240. |
Charlemagne series related links: