The Mac calculator’s original design came from letting Steve Jobs play with sliders for ten minutes

In February 1982, Chris Espinosa, one of Apple's early employees, found himself in a challenging situation reminiscent of dealing with a highly critical boss: Steve Jobs was relentless in his critiques of his calculator design for the Macintosh. After enduring multiple rounds of feedback and revisions, the then-21-year-old programmer devised a clever workaround. He created what he humorously dubbed the "Steve Jobs Roll Your Own Calculator Construction Set," enabling Jobs to take the reins and design the calculator himself. This charming anecdote, sourced from the renowned tech history website Folklore.org, recounts the journey of the original Macintosh development, which launched in January 1984. Espinosa, who began his career at Apple as a teenager, was persuaded by Jobs to abandon his studies at UC Berkeley to join the Mac team full-time in 1981. Remarkably, he continues to work at Apple today, making him the longest-serving employee in the company’s history. At the time, Espinosa, serving as the documentation manager for the Macintosh, sought to better understand the Mac’s graphics system, QuickDraw, by creating a demo program. He chose to develop a calculator as one of the planned "desk ornaments," a term that referred to small utility applications that would accompany the Macintosh. Initially pleased with his design, Espinosa was met with a barrage of critiques from Jobs when he presented it. “It's a decent start,” Jobs remarked before launching into a list of grievances: the background color was too dark, some lines were too thick, and the buttons were oversized. This led to a grueling cycle of revisions, where each day Espinosa would address Jobs's feedback only to have new issues pointed out the following day. While it may have felt like a case of "design by committee," the reality was that the committee consisted of a single, demanding individual who was notoriously hard to please.