Vintage Electronic Calculators:

Overview of Brands


ROYAL: 90S (version-2)
(Page 1/1)

Product number (P/N): UA121 (UA 121),
Keywords/Tags: UA121 (UA 121) | 90S
Date of intro: ~1975, Origin: Japan (List), Dimensions: 120x74x22mm, Weight: 115g,
Power: 6V: (AAA x4) + Adaptor,
Display: Type = Display (VFD) (List), Digits = 8+1,
Number of keys: 22, #Key-Black: 9, #Key-Red: 2, #Key-White: 11,
Keyboard Array (Rows x Columns): 05x05,
Classification: / Pocket,
Featuring: Procent, Square root, PI, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Resemblance with: (Resemblance 033),
Serie-members: ROYAL: 90S (version-1) (Black); ROYAL: 90S (version-2) (Beige),
Known Serial-numbers: 90S69155868A (90S 69.155.868 A) | 90S69178439 (90S 69.178.439) (List of all S/Ns from ROYAL)
Collector value: 7/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),


Created: 19-apr-2006, Manual-update: 14-jun-2022, Batch-update: 14-aug-2022             

# Pageloads since 2018: 9             

1 Pic(s),


If you have a (better) personal picture and/or missing info about any model not listed: Please do send a Mail