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, young Mac developer Chris Espinosa had a peculiar problem with Apple founder Steve Jobs. Espinosa had designed a calculator app for the Macintosh. However, Steve Jobs was never happy with the ...

As somebody who has the same obsessive attention to visual detail as Jobs and who has never been able to exercise it fully in order to build elegant software despite being naturally inclined, I really ...

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 ...

We spend our days glued to screens, streaming videos and scrolling through posts on social media. But we don’t often think about what these platforms cost us. “They’re essentially free, but we pay ...

Everyday Health’s protein calculator, developed by registered dietitian-nutritionists (RDNs) and the team at Lose It!, calculates your ideal protein intake based on your goal. Maybe you’re looking to ...

Learn important methods, formulas and calculation details to determine the power output of a coreless motor, the speed-torque curve of the motor, the current and efficiency plots, and the theoretical ...