Editorial Review:Item Description:Get professional performance with the HP 35s Scientific Calculator. Professionals and college students will appreciate the flexibility no other scientific calculator can offer, with the choice of RPN or algebraic entry-system logic. Switch between RPN and algebraic entry-system logic at any time. Save time with an impressive array of programmable scientific functions. The HP 35s delivers a large 2-line alphanumeric display with adjustable contrast, raised edges to protect the keys, and a robust library of built-in functions and constants. Large 2-line display with adjustable contrast to easily view entries, results, menus and prompts Simplify physics with 42 built-in physical constants, plus a complete library of unit conversions Get accurate results with edit, undo, delete capability Enjoy its compact size and protective raised edges that are designed for the mobile professional Use strong statistics functions for single and two-variable statistics, linear regression and more Use base-n functions for binary, octal, decimal and hexadecimal number calculation and conversion Perform operations on complex numbers, calculate logarithms, exponentials, inverse functions and more Take advantage of a powerful fraction mode plus fraction-to-decimal conversion Programmable with keystroke programming Durable design with raised edges to protect the keyboard, and includes a premium carrying case Dimensions - Length 6.22 x Width 3.23 x Depth 0.72 (15.8x8.2x1.82cm) Weight - 125 grams (4.4 ounces)
Amazon.com Item Description:Ideal for college students, engineers, surveyors, and medical personnel, the HP 35s scientific calculator offers calculation versatility in one economical unit. For added versatility, the HP 35s lets users choose between RPN or algebraic entry-system logic (no other scientific calculator offers both). It also features a large, two-line alphanumeric display to view entries, results, menus, and prompts with ease. The display also sports an adjustable contrast feature, making it ideal to use both indoors and out. A robust library of 100+ built-in functions and constants also comes pre-loaded for immediate use right out of the box. A robust memory ensures even the largest calculations go smoothly and quickly, and more than 800 independent storage registers allow users to store an equation, then use it again to solve any variable, or employ the equation in conjunction with any of the 100+ built-in functions. The calculator is backed by a manufacturer's 1-year limited warranty.
What's in the Box HP 35s scientific calculator, batteries, user's manual, and premium protective case.
Availability: Usually ships in 24 hours
Customer Reviews
Average Rating:
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* Going Back to Core Competency ...
I am glad to see HP going back to its source. This calculator is far from being perfect, but it is going toward the RPN lover and smart kids (addicted user would be the right word)this is the reason for my rating. This is the way for HP to differentiate from the packs of TI and Casio made for average users that try to reduce the usage of their brain to a minimum. This is what the base supporters want because they also want to differentiate themselves from the other users.
Hope that HP will continue that way. I am using this calculator with a lot of pride and emotion.
Rating: -
* HP 35s ...
Good solid calculator. The two registers take a little while to get used to, but now I wouldn't be without them.
Rating: -
* Good but not great ...
The best engineering calculator of all time was the HP41 series. It was intuitive, functionally simple and expandable. The 48 was a marvel but a bit overboard with complexity of functions and menu structure. The 35S is a fair comprimise if you only need simple keystroke programming.
PROS: RPN RPN RPN, classic XYZT stack, big keys, keypress feedback, ENTER key where it ought to be, simple programming.
CONS: No I/O connectivity. No USB, No card slot, Low-res display, Single alpha character naming only, price.
PICKY: Limited conversions, limited constants, decimal points not forced to align on display (RPN mode is left justified), ON button not recessed, 2nd & 3rd function button arrows indicate L & R (why?). PI, STO & X^2 should be primary keys, HMS-> should read ->D.DD, inches should convert to ->mm, ALG mode unnessary.
Rating: -
* 35s - Great Calculator ...
This is a great calculator. As a young engineer preparing for the PE exam, I am very impressed with this updated classic calculator. HP and RPN is the way to go. Only one problem. HP does not include a printed owner's manual. You have to call HP to order one. I look forward to being able to maximize the capabilities of this calculator when the owner's manual arrives.
Rating: 
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* Useless for Hex calculations -- an absolute nightmare ...
This is my first HP calculator and I was looking forward to buying a quality calculator after tossing out Sharp calculators every year or two, when the LCD's went south. I appreciate the solid construction and the "click" when you enter a number, giving feedback that the number is entered without looking at the display. I've had my fair share of using the undo-button on cheaper calculators with flimsy buttons, once I notice that I missed entered a number.
The ENG button for converting to engineering notation is a great welcome, too, and I even like the RPN notation (which I find pretty neat as a newbie to HP's). All of this said -- and to my great dismay -- I discovered that base conversion on the HP 35s is an absolute nightmare. How many ticks does it take to get to the center of a Tootsie Pop? One, two, three ... that's how many operations it takes to enter a hex number on the 35s.
I work with embedded software and, from time to time, need to do a fair amount of calculations in hexadecimal mode (base-16). The 35s assumes that ALL number entered are in decimal format, even when you enable the calculator to output in hex format. Each and every time that I need to enter a hex number, I have to (1) enter the number, (2) enter into base mode (press the blue button and then the 1 button), and finally (3) convert to hex (press the 6 button). What a royal pain in the butt.
I plan to return this calculator. Maybe I'll try a TI calculator this go around.
