HP 35s
Programmable scientific calculator produced by Hewlett-Packard
The HP 35s (F2215A) is a Hewlett-Packard non-graphing programmable scientific calculator. Although it is a successor to the HP 33s, it was introduced to commemorate the 35th anniversary of the HP-35, Hewlett-Packard's first pocket calculator (and the world's first pocket scientific calculator). HP also released a limited production anniversary edition with shiny black overlay and engraving "Celebrating 35 years".
Features
The HP 35s uses either Reverse Polish Notation (RPN) or algebraic infix notation as input.
Other features of the HP 35s include:
Two-line alphanumeric LCD
Over 800 memory registers (26 directly labelled, the others are accessed through the i,(i) and j,(j) indirect addresses.
Scientific and statistical functions
Operation in decimal, binary, octal, hexadecimal
Equation solver with arbitrary variable isolation (first seen on the HP-18C)
Numerical integration (first seen on the HP-34C)
Support for input and display of fractions
Complex number and vector calculations
Unit conversions and table of physical constants
Keystroke programmability with approximately 30 kilobytes of memory for programs and data
The HP 35s has been given a retro look reminiscent of classic HP calculators from the 1970s to the 1990s. However, it provides far more functions, processing power, and memory than most of those earlier models.
The physical appearance and keyboard layout of the HP 35s is very different than that of its immediate predecessor, the HP 33s, but the two calculators are functionally very similar. The primary differences are:
The HP 35s allows both label and line number addressing in programs. The HP 33s had only label addressing.
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