HP 20b
| Industry | Electronics, Computer hardware |
|---|---|
| Founded | January 1, 1939 |
| Products | HP 20b Business Consultant (financial calculator) |
The HP 20b Business Consultant (model F2219A, internally known as "Little Euro") is a financial calculator introduced by Hewlett-Packard in 2008. It delivers capabilities comparable to the HP 10bII, combining scientific and statistical tools specifically designed for business users.
Hardware specification
This model includes a dual-line screen: the upper line displays 8 characters with scrolling and status indicators, while the lower line presents a 12+3 digit readout. The device is powered by an Atmel AT91SAM7L128 ARM7TDMI processor operating at 30 MHz and runs on two CR2032 batteries (one mandatory, one optional). A serial port located beneath the battery compartment facilitates firmware upgrades through a dedicated HP cable.
Functions
Tailored for financial professionals, the HP 20b encompasses essential features such as TVM, IRR, NPV, Net Uniform Series (NUS), amortization schedules, depreciation methods, bond calculations, yield and accrued interest computations, interest rate conversions, cashflow analysis via lists, and break-even point determination.
Its mathematical and statistical tools cover one- and two-variable statistics, averages, standard deviations, forecasting models, correlation coefficients, covariance calculations, factorials, combinations, permutations, logarithmic functions, trigonometric operations, probability distributions, along with fundamental arithmetic functions.
The calculator supports multiple input schemes including RPN, Chain, and Algebraic modes. Additional capabilities feature date computations, customizable display settings and language options, memory storage functions, editing tools, and navigation via scroll keys for improved user experience.
Criticism
Users have noted that the HP 20b lacks physical feedback on key activation and that its menu system can be overly complex.
Examination approval
Since 2009, the Hong Kong Examinations and Assessment Authority has authorized the HP 20b for use in the Hong Kong Certificate of Education Examination. Furthermore, it holds approval from the Global Association of Risk Professionals (GARP) for candidates taking the Financial Risk Manager (FRM) certification exam.
Repurposing
Both the HP 20b and HP 30b are recognized for their open hardware and software design, which has encouraged various repurposing initiatives. The most sophisticated project is the WP 34S—a programmable scientific calculator merging functionalities from the HP-42S and HP-16C models along with extra features. A firmware version featuring a complex number lock mode is known as WP 34C. Additionally, the WP 31S offers a streamlined non-programmable alternative aimed at simplified use.
External links
- Product specification
- HP 20b Virtual Calculator – Hewlett Packard, 2012-12-10
- HP Calculator Simulators for Windows and iPhone OS