|A set of new batteries costs $7 at Radio Shack.|
Even today many seasoned finance executives prefer estimating the economics of a deal using the HP-12C over using computers thousands of times more precise and speedy.
|HP sells a smartphone app that mimics the 12C.|
Some of us need the dimensions and buttons of the real thing.
When the 12C batteries wore out after 15 years, there was no question that I would buy new ones. The calculator will still be in use over the next decade, long after today's computers have been scrapped.
“I would rather be vaguely right than precisely wrong.”---Keynes