HP 33s

HP 33s
Front view of the HP 33s
TypeProgrammable Scientific
ManufacturerHewlett-Packard
Introduced2003
Design firmKinpo Electronics
Cost40 USD
Calculator
Entry modeRPN, Infix
Precision15 digits ±499 exponent (internal)
Display typeLCD dot-matrix
Display size2×14 character
CPU
Processor6502
Programming
Programming language(s)RPN keystroke (fully merged, Turing complete)
User memory31 KB
Memory register4 stack registers, 1 LastX register, 6 statistics registers, 27 variables (A..Z, i)
Other
Power supply2× CR2032 batteries
Weight119 g
Dimensions158 × 83 × 16 mm

The HP 33s (F2216A) was a scientific calculator marketed by Hewlett-Packard. It was introduced in 2003 as the successor to the HP 32SII,[1] and discontinued on the introduction of its successor the HP 35s in 2007.

Features

Its main features are:

  • RPN or traditional semi-algebraic (infix data/algebraic operator entry/postfix one-number function entry), user-selectable
  • Two-line LCD display
  • Full scientific/engineering mathematical features
  • Keystroke-programmable with full boolean and program-control command sets and line edit, insert and delete
  • HP "equation list" equation editor (fully algebraic) in both the stand-alone list as well as in keystroke programs
  • HP Solver feature (solves equations and functions for one unknown)
  • Function integration feature
  • All mathematical operations and features fully functional in all modes
  • Unit conversion and constants
  • 31 KB of random-access user memory (equivalent to about 7 KB on earlier HP programmable models)

The main differences from the HP 32SII are:

  • A radical difference in keypad layout and appearance
  • Memory is expanded from 2 KB to 32 KB
  • Faster processor
  • More functions
  • Algebraic entry mode as well as RPN
  • The display has two lines
  • The length of an equation was now restricted to 255 characters (no arbitrary limit in the 32SII)[1]

The HP 33s was co-designed and manufactured by Kinpo Electronics of Taiwan.[2]

Reception

The 33s is generally considered to have fewer logic bugs than the HP 35s. However, the unconventional chevron-styled keypad has been regarded by reviewers as bizarre and difficult to use compared to other HP professional calculators.[3][1]

Revisions

The 33s went through numerous revisions that have solved two of the most pervasive issues people had with the early models (namely poor screen quality and bad keypad responsiveness).

See also

References

  1. ^ a b c Jordi Hidalgo. "Summing up the HP 33s" (pdf). Handheld and Portable Computer Club. Retrieved 2013-07-11.
  2. ^ "Consumer Electronics: Calculator". Kinpo Electronics. Retrieved 2013-07-11.
  3. ^ Tony Thimet. "HP 33s". Retrieved 2013-07-11.

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