Hewlett-Packard HP-19B II Business Calculator

This vintage HP business calculator features a four line dot matrix display, full alphabetic keyboard and IR printer port. It has many business functions including present and future values, cash flows, depreciation, amortizations, and internal rate of return. In addition, the calculator has a real-time clock w/ alarms, equation solver, unit conversions, scientific functions, and text storage/retrieval capabilities. There is a small chip on the battery door (see photo) which does not affect battery retention.