Product number (P/N): ESR222,
Keywords/Tags: ESR222
Date of intro: ~1976,
Display: Type = Display (VFD) (List), Digits = 8+1,
Number of keys: 25, #Key-Grey: 12, #Key-Red: 2, #Key-White: 11,
Keyboard Array (Rows x Columns): 05x05,
Miscellaneous switch: [OFF-CH-ON R-D],
Classification: / Pocket,
Featuring: Square root, PI, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Collector value: 7/10,