The Calculator Wars. How a Business Failure Led to the…

Fifty years ago, Ed Roberts was facing bankruptcy. His response kicked off a personal computer revolution. Today, a calculator is an app, and not one you’d actually pay for.

The History Of The Calculator: When was the Calculator First Invented?

Six reasons why new businesses fail

Book excerpt: How RBI under Raghuram Rajan started the war against NPAs

Trade Wars: Trump vs. China and the EU

The History Of The Calculator: When was the Calculator First Invented?

Electronic Calculator,Voice Calculators AA Battery Calculator (Black and Gold) : : Office Products

Casio's Eccentric Product Culture, Built on Embracing Failure, by Andy Raskin, Firm Narrative

Product Postmortem: 6 Failed Products And What We Can Learn From Them - The Product Manager

Edtech's failure is Indian education sector's curse to bear