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AKA (Label): ELECTRONIC CALCULATOR CS-2109D, Product number (P/N): CS2109D (CS-2109D),
 Keywords/Tags: CS2109D (CS-2109D) |  2109D
 Date of intro: 197?, Origin: Japan (List),
 Power: AC,
 Display: Type = Display (VFD) (List),
 Number of keys: 29, #Key-Black: 12, #Key-Blue: 4, #Key-Grey: 10, #Key-Red: 1, #Key-White: 2,
 Keyboard Array (Rows x Columns): 05x07, Keyboard Layout:  [+(Minus)(DoubleArrowSwap)] [MU] -  [CT] [7] [8] [9] [(ArrowUp)(ArrowDown)] [%] [CM] -  [(ArrowRight)] [4] [5] [6] [-=] [(SquareRoot)] [RM] -  [CE] [1] [2] [3] [+=] [(Division)] [M-] -  [C] [0] [00] [.] [x] [M+],
 Decimal switch: [F-6-3-2-1-0-A], Round switch: [(ArrowUp)-5/4-(ArrowDown)], Miscellaneous switch: [OFF-ON
K-(Blank)
(Sigma)-(Blank)],
 Classification:  / Desktop with Display,
 Featuring: Procent, Square root, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
 Serie-members: SHARP: CS1109 (10-Digit, No batteries, other CalcChip); SHARP: CS1109A (10-Digit, No batteries, other CalcChip); SHARP: CS1109D (version-1) (10-Digit, Batteries, Black); SHARP: CS1109D (version-2) (10-Digit, Batteries, Beige); SHARP: CS2109 (12-Digit, No batteries); SHARP: CS2109A (12-Digit, No batteries); SHARP: CS2109B (12-Digit, Batteries); SHARP: CS2109D (version-1) (12-Digit, Batteries, Black); SHARP: CS2109D (version-2) (12-Digit, Batteries, Beige),
 Collector value: 7/10,
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