AKA (Label): MODEL 1880, Product number (P/N): 1880,
Keywords/Tags: 1880
Date of intro: 1972, Origin: USA (List), Dimensions: 381x368x178mm,
Display: Type = Display (None) (List), Digits = 14,
Classification: / Desktop with Printer / Navigation (topography, surveying),
Featuring: Scientific functions, Memories: 74,
Certification: 247J(UL) (List All UL's),
Related with: MONROE_perips: 392 (Tape Cassette Drive); MONROE_docu: (Instr.) 1800-Series: Advanced Programming Manual; MONROE_docu: (Broch.) 1880: Indispensable instruments...; MONROE_docu: (Instr.) 1800-Series: Advanced Programming Manual; MONROE_docu: (Instr.) 1880: 1880/F88 Surveyor; MONROE_docu: (Instr.) 1880: Operating instructions; MONROE_docu: (Instr.) 1880: Programming Reference,
Made by: COMPUCORP (List of all Import-OEM-models for MONROE),
Collector value: 8/10,
Info: The 1880 is a compact, advanced system that will handle the everyday simple, as well as complex, mathematical problems of the surveyor.
The Model 1880 Electronic Programmable Printing Calculator is specifically designed to perform surveying calculations; an optional Input/Output Writer accepts alphanumeric information from the calculator and prints it in standard format.
An innovative development by MONROE, the two-unit Model 1880 Survey System is a simple push-button operation with programmed instructions which eliminate the tedious tasks of using tables, charts and non-programmable calculators to evaluate field book leg distances and angle measurements.
For example, the loop traverse program simplifies the process of adjusting and balancing closure errors through automatic, accurate, high-speed electronic computation.
It prints out in a matter of minutes, a complete display of all survey traverse output data in columnar format suitable for presentation to clients.


How it Works:
First, the mathematical calculations required by land surveyors have all been previously stored in a series of credit-card sized magnetic program cards (20 in MONROE's library to date) containing 70 separate surveying routines.
The program cards control the calculator's powerful computation capabilities, but users control the cards plus the calculator.
Each card has a capacity of 512 instructions or steps, and multiple cards can be handled by the 1880 (a card is inserted into the slot above the keyboard and is automatically ejected in one second).
Users then enter data direct from field notes.
This not only triggers the solutions they need, but stores the data in the calculator memory for subsequent calculations.
There is immediate access to as many as 126 stored points.

MONROE's 1880 Structural and Hydraulic En-gineering Packages:
A hydraulic engineering software package with a wide range of applications using the 1880 programmable calculator to perform its computations is a software package written in the language of the engineer.
It offers a total of sixteen programs to provide the user with information to select the best design for the project.
Previously most had been available only in pack-ages designed for large main-frame computers. They now provide the user with more flexibility than many large scale computer programs offer. The programs provide valuable tools for the engi-neer in:
backwater analysis for natural, trape-zoidal or circular channels; the design of storm and sanitary sewer systems; culvert design for cir-cular, box, or pipe-arch culverts; the Hardy Cross analysis of water distribution networks; Streeter-Phelps stream analysis; and gravity flow through elliptical, pipe-arch, circular, and trapezoidal channels.
The Monroe 1880 programmable calculator combines algebraic and hard-wired keyboard functions with powerful programming commands.
As previously noted the keyboard operation of the 1880 is simple and straight forward.
Single keystrokes can generate 27 mathematical functions.
Programs and data-storage memories are expandable.

MONROE 1800 Peripherals:
Complete I/O capability is built into the unit to allow interfacing with a wide range of peripheral devices.
General: Capacity - In all registers, 13-digit tissa with 2-digit power-of-ten exponent within the range of ±99
Printout - High-speed, 2½ per second. Prints 10 significant digits of tissa with sign and 2-digit exponent with sign.
Red print for negative values. Commas to indicate thousands punctuation.
Complete symbology for keyboard functions.
Buffered Keyboard - Allows depression of a digit or a function key while calculator is still executing a previous instruction.
Keyboard Interlocks - Preclude errors occuring from simultaneous depression of two or digit keys.
Decimal Format - User selects decimal position indicating number of digits to the right of the decimal point.
Decimal shifts right automatically overriding selection if necessary.
When input or results exceed a 10-digit mantissa, calculator automatically converts to exponential format.
Internet: Link-1: YouTube