AKA: P-640, Product number (P/N): P640 (P-640),
Keywords/Tags: P640 (P-640)
Date of intro: 1975, Origin: Japan (List), Dimensions: 167x93x37mm, Weight: 195g,
Power: 6V: (AA x4) + Adaptor,
Display: Type = Display (VFD) (List), Brand = FUTABA: 9CT04, Digits = 8+1,
Number of keys: 22, #Key-Black: 11, #Key-White: 11,
Keyboard Array (Rows x Columns): 05x05, Keyboard Layout: [(Division)] [CM] - [7] [8] [9] [x] [%] - [4] [5] [6] [-] [M-] - [1] [2] [3] [+] [M+] - [0] [.] [RM] [=] [C/CE],
Classification: / Pocket,
Featuring: Procent, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip, Memories: 1,
Related with: PYE_docu: (Instr.) P640,
Components: 24 ... 6 Capacitor(s), 8 Diode(s), 4 Resistor(s), 2 Transistor(s), 1 IC(s),
Main Components: WESTERN DIGITAL: LC1552B,
Resemblance with: (Resemblance 504),
Known Serial-numbers: 40804575 (408 04575) | 41010490 (410 10490) | 41112719 (411 12719) (List of all S/Ns from PYE)
Collector value: 7/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),
Internet: Link-1: VINTAGE CALCULATORS WEB MUSEUM, Link-2: VINTAGE TECHNOLOGY