AKA: EC20S, AKA (Label): Type EC 20-S, Product number (P/N): EC20S (EC 20-S),
Keywords/Tags: EC20S (EC 20-S) | Sir
Date of intro: 1976, Origin: Japan (List), Dimensions: 95x65x22mm,
Power: 4.5V: (AAA x3),
Display: Type = Display (VFD) (List), Digits = 8+1,
Number of keys: 19, #Key-Black: 8, #Key-White: 11,
Keyboard Array (Rows x Columns): 05x04, Keyboard Layout: [C/CI] [%] [M] - [7] [8] [9] [(Division)] - [4] [5] [6] [x] - [1] [2] [3] [-] - [0] [.] [=] [+],
Miscellaneous switch: [on-off],
Classification: / Pocket,
Featuring: Procent, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Main Components: MITSUBISHI: M58618-84P,
Resemblance with: ROYAL: 81M, (Resemblance 033), Made by: OMRON (List of all Import-OEM-models for TRIUMPH-ADLER),
Serie-members: TRIUMPH-ADLER: Sir (version-1) ([C] as second key); TRIUMPH-ADLER: Sir (version-2) ([%] as second key),
Known Serial-numbers: 6894609502B (68.946.095.02B) | 6895282701B (68.952.827.01B) (List of all S/Ns from TRIUMPH-ADLER)
Collector value: 7/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),