AKA: ELSI MATE EL-311, MEMORY SAFE GUARD / AUTO POWER OFF, AKA (Label): ELECTRONIC CALCULATOR, EL-311, Product number (P/N): EL311 (EL-311),
Keywords/Tags: EL311 (EL-311) | 311 | ELSI MATE
Date of intro: ~1981, Origin: Japan (List), Dimensions: 113x65x7mm, Weight: 60g,
Power: 3V: (LR43 x2),
Display: Type = Display (LCD) (List), Digits = 10+1,
Number of keys: 27, #Key-Black: 23, #Key-Blue: 3, #Key-Red: 1,
Keyboard Array (Rows x Columns): 06x05,
Classification: / Pocket,
Featuring: Procent, Square root, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Related with: SHARP_docu: (Cat.) 198202 (Japanese); SHARP_docu: (Cat.) 198311 (Japanese); SHARP_docu: (Cat.) 198110 (Japanese),
Known Serial-numbers: 266 (List of all S/Ns from SHARP)
Initial Cost Price: 4800 JPY (€ 38,88), Collector value: 7/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),