TI-65 Galaxy


Serial number RCI 4489: 44th week 1989, Rieti, Italy
Accessories Protective plastic box

Manual: TI-65 Manuel d'utilisation, Gebrauchsanweisung (French/German, 1987, approx. 220 pages)

Original cardboard box including plastic insert
Condition Mint out of the box!
Repairs, Comments
Acquired 16.7.2003

Serial number RCI 3087, 30th week 1987, Rieti, Italy
Accessories Protective plastic box

Manual: TI-65 Manuel d'utilisation, Gebrauchsanweisung (French/German, 1987, approx. 220 pages)

Original cardboard box

Brochure: Texas Instruments News TI-65 (German, A4, 4 pages, 1987). On the back a comparisn between different TI calculators: TI-56, TI-57II, TI-60, TI-62 Galaxy, TI-65, TI-66, TI-74, TI-95.
Condition Mint!
Repairs, Comments
Acquired 7.2.2004
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Type, Precision, Input mode Scientific, 10 BCD digits, exponent 99, Algebraic
Programmable Yes, keystrokes. Insert and delete supported, numeric labels, up to 100 program steps.
Performance Index 0.85 - this is definitely a very slow machine! Ie. the HP-28S introduced in 1988 reaches an index of 54.  And even the TI-59 introduced 10 years before the TI-65 reaches 2.5.
Memory Variable number of program steps and data registers. Data registers are automatically converted to program memory except when protected by the PUM command. Maximum 16 data registers with no program steps. Minimum 1 data register with 100 program steps. One data register corresponds to 7 program steps.
Permanent memory.
Display 10 digit 7 segment black&white LCD plus 2 1/2 digit exponent
Special features Conversions, hex and oct numbers, numeric integration, linear regression, built-in timer, comfortable hour-minute-second display, physical constants, automatic power-off.
Original Pricing, Production 1987, the price tag on the cardboard box indicates 135.65 DM (approx. 68 Euro)
Batteries 2x small button size cells
Dimensions Length 8.7cm, Width 14.3cm, Height 2cm
Links Datamath Museum.
Picture of the Comparisn sheet.
Manual: TI-65 Manuel d'utilisation, Gebrauchsanweisung (PDF, French/German, 1987, only German section)
Comment A surprisingly powerful machine with a wealth of features!
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