HP-19B
| Industry | Electronics, Computer hardware |
|---|---|
| Products | HP-19B calculator |
HP-19B, launched on 4 January 1988 together with the HP-17B, HP-27S, and HP-28S, was a streamlined business calculator developed by Hewlett-Packard. Its successor, the HP-19BII (model F1639A), was introduced in January 1990. The HP-19B employed a clamshell form factor, resembling models such as the HP-18C, HP-28C, and 28S.
Typical problems involved the plastic battery compartment cover breaking under stress and ribbon cable malfunctions resulting from frequent opening of the device.
Targeted at financial users, this calculator provided capabilities for time value of money calculations, amortization schedules, interest rate conversions, and cash flow evaluations. Additional business-related functions comprised percentage change computations, markup calculations, currency conversions, and unit transformations. It also included trigonometric functions and graphing features. A distinctive attribute was the ability for users to program custom equations for problem-solving and to save text entries using the keyboard located on the left side. Moreover, it incorporated an integrated infrared transmitter enabling wireless printing of graphs and data on compatible printers such as the HP 82240A or HP 82240B.