Back in my previous life, I was a finance guy—that’s what my undergraduate degree is in, and that’s how I made my living for many years. Through it all, one particular piece of gear was always at my ...

Pictured above is the HP 12C Financial Programmable Calculator, available from the Hewlett-Packard website for $69.99. What makes this calculator totally unique among all consumer electronic products ...

Designed for dealmakers, the 12c is engineered to handle complex formulas for calculating loan payments, determining bond yields, and constructing depreciation schedules. It’s a cult classic among ...