AKA: 1155 calculator, SINGER, AKA (Label): ELECTRONIC CALCULATOR MODEL 1155, Product number (P/N): 1155,
Keywords/Tags: 1155 | SINGER
Date of intro: 1972, Origin: USA (List), Dimensions: 533x381x203mm,
Power: AC,
Number of keys: 60, #Key-Blue: 20, #Key-Brown: 16, #Key-White: 24,
Classification: / Desktop with Printer,
Featuring: Scientific functions, Square root, PI, Programmable, Memories: 20, Programmable Steps: 511,
Related with: FRIDEN_docu: 52000201 (Instr.) 1152; FRIDEN_docu: TP285 (Service) 1155; FRIDEN_docu: 55538 (Instr.) Reference Manual (1155); FRIDEN_docu: 55537 (Instr.) Operator's Primer (1155),
Known Serial-numbers: 550657 (List of all S/Ns from FRIDEN)
Collector value: 8.5/10,
Info: The model 1155 is a calculator having a program capacity of 511 instruction steps, two working registers, and twenty data storage registers (each independent of program storage and working registers).
Register capacity is 13-digits with a 2-digit exponent, plus decimal point and sign. Its dynamic range is: 10-99 to 1099.
A plug-in magnetic card reader/recorder, reads and/or writes two 511 step programs. Provision is also made for plugging in an X-Y plotter.
The printed tape output is accomplished by a small compact single print wheel,
helical printer under control of the 1155 logic.
Internet: Link-1: COMPUTER HISTORY MUSEUM

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