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REX-ROTARY: 250
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AKA: CONTEX 250, Product number (P/N): 250,
Keywords/Tags: 250 | CONTEX
Date of intro: 1972, Origin: Denmark (List), Dimensions: 215x205x70mm, Weight: 1560g,
Power: AC,
Display: Type = Display (Gas disharge) (List), Digits = 14, Extra Display features: Type = Display (Incandescent bulb) (List), Quantity = 2,
Number of keys: 25, #Key-Grey: 13, #Key-White: 12,
Round switch: [(ArrowUp)-5/4-(ArrowDown)], Indicators: (Minus) OVF,
Classification: / Desktop with Display,
Featuring: Procent, Logic-technology: LSI (Large Scale Integration), calculator-chipset,
Main Components: ELECTRONIC ARRAYS: FDY150B5005; ELECTRONIC ARRAYS: FDY300B7003; ELECTRONIC ARRAYS: FDY310B7014; ELECTRONIC ARRAYS: FDY320B7002; ELECTRONIC ARRAYS: FDY810BZ47129,
Other components: NATIONAL SEMICONDUCTOR: DM7402N; NATIONAL SEMICONDUCTOR: DM7404N; NATIONAL SEMICONDUCTOR: DM7472N; NATIONAL SEMICONDUCTOR: DM7490N; NATIONAL SEMICONDUCTOR: DM8880N,
Known Serial-numbers: 084000413 (List of all S/Ns from REX-ROTARY)
Collector value: 8/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),

Item

Display

Display

Internals

Internals
Display-module

Internals (display)

Internals (keyboard)

Internals (power supply)

Keyboard (overlay)

Label, name plate / Examples of use

Protection (dust cover)

Created: 15-aug-2004, Manual-update: 19-may-2018, Batch-update: 24-jun-2022             

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11 Pic(s),

                     

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