HP 19BII
| Company type | Product |
|---|---|
| Industry | Electronics, Calculators |
| Predecessor | HP-18C, HP-28C |
| Founded | January 4, 1988 |
| Successor | HP-19BII (F1639A) |
| Products | Business calculator |
| Owner | Hewlett Packard |
HP-19B, launched on 4 January 1988 alongside models such as the HP-17B, HP-27S, and HP-28S, was a streamlined business calculator developed by Hewlett Packard. Its design featured a clamshell form factor, reminiscent of the HP-18C and HP-28C. In January 1990, the HP-19B was succeeded by the HP-19BII (F1639A).
The clamshell casing exhibited two frequent problems: the plastic surrounding the battery compartment was prone to cracking due to battery pressure, and the ribbon cable linking the dual keyboards tended to fail after multiple openings.
Targeted at finance professionals, the device provided functions including time value of money calculations, amortization schedules, interest rate conversions, cash flow evaluations, percentage change computations, markup analysis, currency conversion, and unit transformations. Additionally, it incorporated mathematical tools such as trigonometric functions and graphing capabilities. A notable attribute was its capacity to develop customized problem-solving formulas and save text entries via the left-side alphabetic keyboard.
The HP-19B featured an integrated infrared transmitter for printing purposes, compatible with HP infrared printers like the HP 82240A/B, allowing users to directly print graphs from the calculator.