compare hp 32s 35s rpn scientific calculator

#Compare hp 32s 35s rpn scientific calculator code

Which could be expressed in the following HP-32S program: LBL V Name the program VĪfter exiting program mode, the user would press FN=V to indicate that the V program was to be solved. The equation could be rewritten in the form f(f, i, a, t) = 0 ie: i + at - f = 0 After entering a single program, the user could solve for any variable.įor example, given a change in velocity over time problem expressed by the equation: f = i + at The RPN Solver on the HP-32S allowed the user to enter a program which accepted multiple variables and computed f(a, b, c. To use the root finder the user wrote a function that accepted x, and left f(x) in the X register. The HP-34C had introduced the first built-in root-finder which could solve for f(x) = 0 expressed as an RPN program. The HP-32S featured to the first RPN solver. Integer, fraction, rounding, absolute value.Labeled Input/Output via the INPUT and VIEW commands.(Although the calculator optimized integer numbers from 1 to 99 into 1.5 Byte lines.)

#Compare hp 32s 35s rpn scientific calculator code

Any number fit on one code line but those code lines require 9.5 Bytes. Most program lines required 1.5 Bytes of memory but the calculator used fully merged keycodes - including numbers. (In fact, in large program listings, HP typically listed a checksum every dozen or so lines so the user could find mistakes quickly.) This gave the user assurance that the program was entered correctly. The index could be stored with STO i, and an indirect store could be done via STO (i).Īnother new feature was the program checksum. Indirection was available via the i variable which was distinct from the I variable. Unlike most previous models, this one checked for duplicate labels and produced an error message.

(Like A01.) For very long functions, the next 100 lines were displayed as A.01-A.99 and the next hundred as A,01-A,99. To aid in navigating programs, line numbers began with the most recent label followed by two digits. The calculator used label addressing and allowed subroutine nesting to seven levels deep. The programming features were impressive for a calculator of its price. This was handy for debugging since it didn't affect the stack. A single variable could be displayed without entering it on the stack by pressing VIEW followed by the letter. All the variables could be scanned with the VAR command. The letters A-Z where printed to the sides of the keys. When RCL or STO was pressed, an A.Z annunciator appeared. The lettered variables were not allocated from memory until used and they could be individually deallocated by simply storing 0 in them. While these variables were used in much the same way as numeric registers, they were more than just a relabeling. The calculator used the 27 lettered variables A-Z and i (indirection) rather than numbered variables. The Functions that could be prefixed with CMPLX were:īecause there was no complex 'mode' and no 'complex stack' as on the HP-15C, complex numbers were each entered into two levels of the normal stack.

Instead of the HP-15C's complex mode, the HP-32S had just one mode but allowed the CMPLX key to be used as a prefix to the other functions in much the same way other calculators used HYP or ARC prefixes on trigonometric functions.

Obvious error messages (like Divide By 0.).Variables instead of numbered registers (see below.).Complex Arithmetic functions (see below.).(With windowing to view long binary numbers.) Binary, octal, decimal and hexadecimal bases.Numeric integration (of RPN functions.).Basic scientific functions including hyperbolic functions.