Abstract: Different types of financial web calculators' support web users in financial decision-making and similar finance products comparison. This paper illustrates the general characteristics of ...

TOKYO, Dec. 1, 2025 /PRNewswire/ -- Casio Computer Co., Ltd. announced the release of 25 new design calculators. The 25 new design calculators offer users an abundant choice of colors to suit a wide ...

TOKYO, Nov. 30, 2025 /PRNewswire/ -- Casio Computer Co., Ltd. announced the release of 25 new design calculators. The 25 new design calculators offer users an abundant choice of colors to suit a wide ...

As Andy Hertzfeld describes on folklore.org, early Apple employee Chris Espinoza drew a calculator for the Macintosh. He showed it to Steve Jobs. Jobs’s response? “Well,” he said, “it’s a start, but ...

Apple co-founder Steve Jobs was infamous for his harsh critiques of the work of his team. Hardware or software, if Steve wasn’t 100% happy, you would certainly know about it. Chris Espinosa, who wrote ...

In 1982, a young Mac developer turned Jobs into a UI designer—and accidentally invented a new technique.

In February 1982, Apple employee #8 Chris Espinosa faced a problem that would feel familiar to anyone who has ever had a micromanaging boss: Steve Jobs wouldn’t stop critiquing his calculator design ...

A collection of calculator applications built with Python and modern web technologies. Includes a simple Python CLI Calculator and a Modern Web Calculator with HTML, TailwindCSS, and JavaScript.