Vertrauen Calculators

Algebraic Manipulation Package, v3.0

Complex num rpn calc uses ASCII macro files

CALC v1.00 - Mathematical expression solver. CALC can solve math problems given on the command-line or in an interactive session. Standard functions include the trig functions plus others. The user can define symbols and functions in the interactive mode. Shareware $10 from TKD Software.

TSR calculator, deg/rad for trig, temps in C/F

'Infinite' precision calculator

Math calculator

Calculus learning tool & graphing calculator

Complex number calculator,real/complex expres.

1-D compressible flow funcs/invers calculator

Converts inch/ft/yds/acres/miles/area/volume

Units conversion, U.S./Metric/Imperial SI

Datever (tm) calendar calculator is a small DOS program designed to compute the weekday and date for a given number of days added to or subtracted from a given date. Alternatively, Datever (tm) will return the number of days since or until an input date. The computed date is the default reference for a subsequent calculation.

Online calculator with 25 different operations

Calculates the date of Easter in any year

Evaluates mathematical expressions

EVAL v1.06: Mathematical expression evaluator

Unix-like command line expression evaluator

Tiny Unix 'expr'-like integer expr evaluator

TSR 4 Func. calc. with paste functions

Fast Fourier Transform/Spectrum calculator

Non TSR 4 func. calculator

Calculate charts/graphs of bicycle gear ratios

Hex/dec/binary calculator and ASCII/video ref.

Command line number convert HEX <--> DECIMAL

HP's DEMO disk for 48SX calculator

Transf HP Calc infrared data->PC using $4 part

Time calculator. Add/subtract hours & minutes

Memory resident RPN scientific calculator

Memory resident scientific calculator

MatCalc v1.2: Matrix calculator

Math. calculator with user def. functions v2.3

Powerful scientific calculator

Enhanced desktop calculator with entry editing

Floating point expression evaluator/ANSI C src

Matrix calculator

Time conversion and calculator

Hindu Calendar. Date, positions of Moon & Sun

Convert between several numbering systems

HP Calculator

Programmable calculator, with Turbo Pascal src

Charts Hindu Horoscope for date/time/location

Reverse Polish Calc(v1.02) - Bubble gum colors

RPN scientific calculator, emulates HP42s

Docs for RPN v3.0, a scientific rpn calc.

HP-29 clone, ~100 functions inc. stats; CGA

TCv2.0 source code for rpn v3.0 by bobmon

Calculates savings necessary for retirement

Scientific calculator/equation solver

Scientific calculater

SymbMath v3.2: Symbolic calculator w/learning

Calculate sunrise and sunset times

Quick Almanac, Sun/Moon rising/set times

Mathomatic V5.3 is a powerful symbolic math program that can automatically solve, simplify, combine, and graph algebraic equations, etc. Does calculus operations, too. Mathomatic is an inexpensive alternative to Mathematica.

Checkbook and statement reconciliation

Calculator for totaling payroll timecards

Calculates, tabulates, & plots your functions

Jogging calculations and a pacer by Prof. Timo Salmi of the University of Vaasa.

Standard matrix calculations, T.Salmi

ULTIMATE CALCULATOR v2.4 - Graphic scientific calculator. Expression evaluator with many built-in functions, operators, numerical notations, and modes. Supports user variables & functions. Solves, and plots equations, does integrations and summations. Supports hex & binary notations. Radian & degree modes. 18 significant digits. Online help and much more.

Units conversion program, like Unix 'units'

Vector calculator - for eng. and graphics

Calculators emulate HP-11C, HP-12C & HP-16C

Scientific calculator