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HP 20s Scientific Calculator
T
The Cook Boys (2261)
98.3% positive feedback
Price:
$199.99
Returns:
30 days returns. Buyer pays for return shipping. If you use an eBay shipping label, it will be deducted from your refund amount.
Condition:
- Buy It NowHewlett Packard HP 20s Scientific Calculator SEALED NOS NEW Vintage with Manual
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About this product
Product Information
Get ready to solve difficult math equations, including algebraic equations, quickly and easily. The HP-20S programmable scientific calculator is a wonderful accessory for students. The 20S will take them from middle school pre-algebra through college calculus and more advanced science and mathematics courses. Young mathematicians will progress rapidly through algebra with the 20S thanks to its intuitive algebraic entry system. This allows students to enter data into the calculator algebraic notation, just as it appears in test or homework questions. This feature is especially useful when doing complex mathematical operations of solving equations that require many steps. After writing their work out on paper as required, students can check their work with the 20S. If the student has the wrong answer, they can input each step into the calculator to find the error.The HP-20S scientific calculator will continue to serve students well as they progress to higher mathematics courses. It will display up to 12 digits at a time. Advanced calculus students can take advantage of the formula button for Simpson's Rule of Integration. Data science students will save time with the 20S when they use the built-in curve fitting programs. The standard programs in memory also include quadratic formulas, 3x3 matrix operations, and complex mathematical operations. To access the program library in memory, press left shift key, delete key, load key. You can then use the letters A-F to access program groups. A calls the root finder. B is for numeric integral programs. Choose C for complex number arithmetic. D accesses matrices, and E is the quadratic equation solver. F is for exponential, logarithmic, and power regression functions.Business professionals can also find plenty of use for this scientific calculator, which comes with over 150 essential functions. Some the standard conversion features on the 20S include distance in centimeters to inches and mass in pounds to kilograms. Baking Continental recipes become a breeze with the built-in volume conversions like milliliters to teaspoons, tablespoons, or fluid ounces. Distance conversions while traveling is a snap, with the pre-programmed mile to kilometer conversion function. Fashionistas will find the pre-programmed size conversion feature, including centimeters to inches, which is handy when purchasing clothing in European sizes.Students will enjoy the ease of the root-finding feature and the quadratic formula shortcut. Trigonometric functions available at the touch of a key include sine, cosine, and tangent. Other essential math shortcuts already programmed in include exponential, log, and antilog keys. Students can also input their own equations and programs to this Hewlett Packard calculator with the programmable keystroke feature. This lets the student automate specific routine equations or programs for certain classes and topics. Many teachers allow students to store specific equations in their calculator's memory for use during tests. The HP-20S fits in a laptop case, briefcase, or purse, so it's always at hand when you need it. Even though the calculator has a compact size, the keys are not, making them easy to see and use. This calculator comes with a vinyl Hewlett Packard slipcase to protect it through the years and requires three LR44 batteries.Product Identifiers
BrandHP
MPNHP20S
UPC0088698000335
Model20s
eBay Product ID (ePID)54857029
Product Key Features
Power SourceBattery
SizeHandheld
Key SizeRegular
TypeScientific
Additional Product Features
Display TypeRegular
Digit Display12 Digits
Family LinePioneer
All listings for this product
Ratings and Reviews
Most relevant reviews
- Jul 09, 2016
HP 20S scientific calculator
Very robust, reliable, algebrai function, touch sense keys, great layout, raised keys, easily fits into a shirt pocket, comprehensive manual. Purchased as a backup when my first one "dies".Verified purchase: Yes
- Sep 27, 2017
Spot on.
All though the description of the calculator's condition was as stated "Mint", was entirely true. You couldn't ask for a better price. I was extremely disappointed in the packaging. Simple bubble wrap envelope, to protect a "Mint condition" calculator, is not sufficient. All that said beautiful product and short arrival time is a plus.Verified purchase: YesCondition: Pre-owned
- Sep 16, 2022
Unit WAS in original clam shell packaging with manual still shrink wrapped.
I absolutely love it. The heft and "key feel" are unavailable on calculators in the current market.Verified purchase: YesCondition: Pre-owned
- Jul 31, 2018
Calculator overview
Calculator is in excellent condition, clear display, and limited keypad operations. Most of the keypad is functional except the + - * + buttons.Verified purchase: YesCondition: Pre-owned
- Jul 23, 2019
Excellent Product Description
Replacing an old calculator that I had for 20 years. Good quality and value.Verified purchase: YesCondition: Pre-owned
- May 11, 2021
simple and good enough
Quite simple and easy to use. Good for everyday use. It would be better if it possesses RPN input selection.Verified purchase: YesCondition: Pre-owned
- Sep 07, 2016
Best general purpose scientific calculator I ever owned.
I have owned one of these calculators for many years and consider it the best I have ever owned and it still works. An excellent general purpose scientific calculator includes some of the most common metric conversion units and 10 memories. It enclose in a very solid, durable case.Verified purchase: YesCondition: Pre-owned
- Jan 29, 2018
Great Vintage Calc!!!
Why can't they make calculators like this one anymore? Simple. Powerful. Programmable. And batteries last a looooong time.Verified purchase: YesCondition: Pre-owned
- Mar 12, 2018
Classic HP Quality
Thank you for item. Just like my old one that is reliable and when quality mattered.Verified purchase: Yes
- Jan 25, 2022
Good deal
Very happy with item. Wish I had it in high school and college. Got user manual online but nice to have paper mznual.Verified purchase: YesCondition: Pre-owned
