Unsatisfied with the designs provided by an Apple engineer, Steve Jobs designed the original Mac calculator in about 10 minutes.

VisiCalc was the first electronic spreadsheet, released with Apple II's personal computer in 1979

Before 1979, managers were essentially information processors working off paper ledgers. Scenario modeling was slow, manual, and expensive. Companies were understood as organizations that built things with financial analysis as secondary. VisiCalc made calculation so cheap that you could work iteratively, setting out forecasts and tweaking assumptions until you got the answer you wanted. Oks argues It created a new way of seeing the world.

Designed in 1937 by Harvard graduate student Howard H. Aiken, the 'Harvard Calculator' was used by the US Navy to solve advanced physics problems.

Apple, the tech giant renowned for products like the iPhone, iPad, and Mac, started out in a garage in 1976.

Steve Jobs founded NeXT while on a break from Apple

While Steve Jobs was on a hiatus from working at Apple, he founded a company called NeXT and helped lead the release of its operating system NeXTSTEP. The operating system was used to create the first app store of sorts, as well as the first web browser.

Before starting Apple, Steve Jobs cold-called HP at 12 years old and got a summer job.

Lessons learned from Steve Jobs

From predicting our screen-filled future in 1983 to slashing Apple's product line in 1997, Steve Jobs believed in focus, simplicity, and the fusion of technology and art. His philosophies still influence how products are built and marketed today.

One of Apple's first computers sold for $375K at an auction

An operational Apple I, the first model of personal computer made by Apple, sold for $375K at an auction. The machine was first sold in 1976 and has a handwritten serial number by Steve Jobs himself. The auction, provided rare insight into the beginnings of the influential tech company.

A short biography of Apple cofounder Steve Jobs

Steve Jobs led Apple for almost a quarter century, first from 1976 through 1985 and then from 1997 through just before his death in 2011. A brief synopsis of his career underscores the impact he made during that timespan, across everything from technology to smartphones, moviemaking, retail and much more.

Creating the iPhone ended the marriages of several of Apple's engineers

In the early 2000s, Apple recruited multiple engineers onto rival teams tasked with combining phone, internet, and iPod capabilities. Despite significant technical hurdles, Steve Jobs favored a prototype with multitouch technology and a modified Mac operating system over a competing in-house model based on the iPod's click wheel. (Some users may experience a paywall.)

One of the first mechanical calculators—the Pascaline—was built in the 1640s by French mathematician Blaise Pascal to help his father, who worked as a tax collector.

Steve Jobs saved a nearly bankrupt Apple

Apple nearly went bankrupt in 1997, when the tech company had only three months of operational cash left. Apple's board ousted cofounder Steve Jobs in 1985, but he was brought back as interim CEO to revive the company when Apple purchased Jobs' company, NeXT.

Apple's first backer recruited his own CEO to help manage the company

Wanting Steve Jobs and Steve Wozniak to focus on developing Apple computers, Mike Markkula brought in his colleague from Fairchild Semiconductor, Michael Scott. As employee number five, Scott helped professionalize the fledgling computer company and getting manufacturing off the ground. (Some users may experience a paywall.)

Watch Steve Jobs unveil the first iPhone in 2007

During his Macworld San Francisco 2007 keynote address, Jobs claimed Apple had reinvented the phone by integrating phone capabilities with internet access and music playback from its iPod product line. The multitouch display eliminated the need for a stylus or keyboard hardware typically found on other smartphones.

Steve Wozniak invented the personal computer

Steve Wozniak's Apple I and Apple II computers launched the personal computer industry, influencing the future of consumer electronics. He was also awarded the National Medal of Technology and the Heinz Award in Technology, the Economy, and Employment because of his invention.

Mac settings have evolved from minimalism to chaotic clutter

The 1984 Mac control panel featured wordless icons, sliders, and desktop pattern editors, highlighting early experimentation in graphical user interface design. This software charm and personality gradually disappeared as Apple enforced visual and functional consistency over time.

Among the smallest mass-produced mechanical calculators in history, the Curta was designed by Austrian engineer Curt Herzstark while imprisoned in a Nazi concentration camp during World War II.

When Steve Jobs recruited former CEO Tim Cook to work at Apple in 1998, the company was on the verge of bankruptcy—and many of Cook's friends advised him not to take the job.

Steve Jobs changed the world with Apple and Pixar

The devices Jobs introduced during his time at Apple, including the iPad and iPhone, were imitated by competitors, ultimately helping to create the numerous options consumers have today. In addition to leading Apple, Jobs also helped turn Pixar and the software startup NeXT into success stories.

Apple's board fired Steve Jobs in 1985

Apple's board fired cofounder Steve Jobs after he clashed with then-CEO John Sculley about Apple's goals and vision, as well as how to run the company. Apple later rehired Steve Jobs as interim CEO, a role he held until he died in 2011.

In 2018, Apple became the world's first publicly traded trillion-dollar company

The valuation was made possible by Steve Jobs' return to the company in 1997, who implemented a simplification strategy by cutting the majority of Apple's existing product line. His promotion of Jony Ive to SVP of industrial design would help popularize Apple through colorful products and marketing.

Apple’s third cofounder was its angel investor

Steve Jobs and Steve Wozniak are well-known for cofounding Apple, but the company had a third founder who acted as an angel investor: Mike Markkula, who invested $250K in 1977.

Watch Steve Jobs introduce the first iPad

Apple's cofounder debuted the first iPad in 2010, framing it as a third category of personal electronics between the laptop and the smartphone. Steve Jobs showed off how thin the device was (for the time) and explained how it was better than smartphones and laptops for browsing the web.

Slide rules—ruler-sized mechanical calculators with a component that slides out to show relationships between numbers—were used by engineers at NASA during the Apollo missions.

Listen to Steve Jobs explain his 'rock tumbler' metaphor for teamwork.

Microsoft Office debuted on the Macintosh in 1989

Over 15 months before its debut on Windows, the suite included Microsoft Word, Excel, PowerPoint and Mail—the precursor to Outlook. Bill Gates saw the Mac as a testing ground to work out bugs and gather feedback before the Windows release.

Jony Ive helped popularize Apple with iconic product form factors

Appointed SVP of industrial design in 1997 and chief design officer in 2015, Ive was responsible for the translucent plastic shells found on early iMacs and the iBook G3. He also oversaw the construction of Apple Park—the company's headquarters.

The Macintosh popularized GUI and mouse navigation for personal computing

A graphical user interface that utilized windows, icons, and pull-down menus, rather than text-based commands, contributed to the device's success after its January 1984 launch. Its original sound system—capable of playing four voices—was developed after non-technical staff suggested the machine should play music.

The first commercially successful calculating machine—the arithmometer—was patented in 1820 but not mass-produced for over three decades, likely because its inventor was focused on his insurance business.

Why Steve Jobs always wore the same outfit

Steve Jobs is well-known for his signature outfit: a black mock turtleneck and denim jeans. The outfit originated in Japan, where Jobs observed Sony employees all wearing matching uniforms. He proposed Apple employees do the same, but that idea was rejected. However, he still decided to create his own uniform.

Explore an online gallery highlighting the importance of graphical user interfaces

Before the Macintosh, computers were primarily used in offices and required users to type complex commands to perform tasks. Apple followed the device with the LaserWriter printer, bringing graphic production to at-home artists and designers.

Steve Jobs introduced Apple’s 'Think Different' marketing campaign

Jobs introduced the now-iconic “Think Different” marketing campaign. It won numerous awards, symbolized Apple’s new era under Jobs, and showed off his understanding of branding.

See Don Valentine's original 1977 memo for Sequoia's investment into Apple Computer

In honor of Apple's 50-year anniversary, Sequoia Capital recently posted a tweet on X (the social media platform formerly known as Twitter) with a photo of the original 1977 memo for Sequoia's investment in Apple.

Steve Jobs revolutionized animated filmmaking

Steve Jobs left his mark beyond Apple with Pixar, the animated studio he acquired in 1986. In addition to pushing Pixar to focus on storytelling, Jobs led the studio to revolutionize animation via computer-generated imagery.

When Steve Jobs Spent All His Money To See Neem Karoli Baba

In 1974, Steve Jobs traveled to India after reading a book by the famous American psychologist Ram Dass. Jobs visited the temple of one of Dass’s influences, Neem Karoli Baba. He stayed in India for seven months before returning to the US to found Apple. Jobs’s trip to India helped shape the tech leader’s vision for Apple.

How Steve Jobs tried to end development on Linux by offering Linus Torvalds a job

In a 2012 interview, Linus Torvalds claimed that the Apple CEO offered him a job in 2000 to exclusively work on Mac OS's Mach kernel. While Linux has not provided the financial benefits that a business venture with Apple may have, Torvalds stated, "I'm very happy with feeling that I've done the right thing." (Some readers may experience a paywall.)

Explore a visual history of the Windows operating system

Named after the windows that separate different applications, the operating system’s first version came preinstalled with Calculator, Paint, and Reversi. There was no Windows 9 to avoid compatibility issues with legacy code searching for Windows 95 and 98 files via a “windows9” query.

Microsoft's initial successes came from promising products that did not yet exist

In discussions with teams responsible for MITS's Altair 8800 and IBM's PC, Bill Gates and Paul Allen claimed to have created ready-to-use software. Code for the former was not completed until Paul Allen's flight to MITS' headquarters, where the software was successfully tested for the first time.