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Commodore PR-100

• Type: Semi-Algebraic Programmable Electronic Calculator
• Size: 6 x 3 inches / 15 x 8 cm
• Serial number: 117109
• Date of Manufacture: 1977

A scientific and statistical calculator with ten memory registers and program memory for 72 keystrokes (not instructions!). Internal rechargable battery was removed by a previous owner, who then didn't finish the job by reattaching the power leads someplace useful, like the external power jack. Now resurrected.