HP 75C and HP 71b portable computers play Jingle Bells via HP-IL @CalculatorClique
HP 75C and HP 71b portable computers play Jingle Bells via HP-IL @CalculatorClique
Uploaded December 2025 | Updated September 2026, 3 weeks ago
The HP-75C and HP-71b are connected via HP-IL and the 75C runs a BASIC program to play Jingle Bells across both devices by sending commands to the 71b and using HP-IL communications to wait for the 71b to complete its parts before continuing.

Explanation and configuration details provided following Jingle Bells.

Happy Holidays !
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Calculator Clique |

HP 75C and HP 71b portable computers play Jingle Bells via HP-IL

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