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HP 33s Scientific Calculator US$50

The HP 33s is Hewlett-Packard's cheapest programmable calculator. It is also one of only two calculators with RPN that are approved for use on NCEES engineering exams.

Included Accessories

• Protective pouch
• Batteries
• 387-page printed user's manual

Physical Characteristics

• 158 mm by 83 mm by 16.2 mm (6.2" by 3.2" by 0.63")
• 127 g (4.5 oz)
• Silver metal faceplate with textured gray back and rubber side grips
• Hard plastic keys with tactile feedback

Technical Specifications

• Dot matrix LCD (5 by 7 pixel characters) with 2 lines of 14 characters
• 8502 processor
• 32 KB RAM (31 KB available to the user)
• Two CR2032 batteries, providing 250 hours of typical use
• Over 100 built-in functions
• 12 digits displayed with 3-digit exponent
• HP part number F2216A (Data Sheet)

Calculating Environments

• Traditional RPN (Reverse Polish Notation) with four-level stack
• AOS-style algebraic, supporting 13 pending operations

Programmability

• Keystroke programming, like the 32SII
• 27 registers
• Flags, tests, branching, and looping
• Alphabetic input

Probability and Statistics

• Σx, Σx2, Σy, Σy2, Σxy, n
• One and two variable statistics
• Linear regression
• Normal and inverse-normal distributions
• Grouped standard deviations
• Curve fitting (linear, logarithmic, exponential, power)
• Combinations, permutations, factorials, random number generation

Scientific

• Decimal hours/degrees to hours/degrees-minutes-seconds conversions
• Rectangular and polar modes
• Simple unit conversions (temperature, weight, length, and liquid volume)
• Base conversions including arithmetic and Boolean logic on 36-bit numbers (decimal, binary, hexadecimal, octal)
• 40 built-in physical constants

Mathematics

• Trigonometry, including hyperbolic and inverse sine, cosine and tangent, with degrees, radians, or grads
• Numeric integration
• Solving, including the traditional HP Solve
• Evaluation of equations
• Decimal functions, finding the integer and fractional parts, the floor, and rounding to a specified number of decimal places
• Fractions, including conversions between decimals and fractions
• Time value of money
• Complex numbers

Standardized Exam Support

• AP Chemistry
• AP Physics
• SAT Reasoning Test
• SAT Subject Tests in Mathematics Level 1 and Level 2
• PSAT/NMSQT
• ACT Mathematics Test
• PLAN
• EXPLORE
• NCEES FE and PE Exams (approved for 2008 exams)

HP Provided Documentation

• HP 33s User's Manual, 387 pages, provided in printed form with the calculator
• Forty-two Training Modules, totaling 246 pages, provided as a separate download

Warranty and Support

• 1 year limited warranty in the US, provided by HP America
• Toll-free technical support in the US, at 800-HP-INVENT (800-474-6836)

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