@Raspberry_Pi Oh, wait!
#HP11c joins the #HP16c, too.
Best calculators ever.

Petit nettoyage/restauration d'une demoiselle qui fête ses ~41 ans :owi: #hp #hp11c

One of my most prized possessions. I purchased this Hewlett-Packard 11C scientific calculator in 1984, between my freshman and sophomore years. I used it constantly through college and grad school, and still pick it up several times a week. I have replaced the batteries ONCE in 38 years. They don't make them like this anymore.
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#hp #hp11c #vintage #calculator #RPNforever