Mark Dean designed the first IBM PC while breaking racial barriers


Dr. Mark Dean, an African-American computer scientist and engineer, spent over 30 years at IBM pursuing the Next Big Thing. He was chief engineer of the 12-person team that designed the original IBM PC in the early ’80s, earning him three of the nine original patents for that device. Dean was also instrumental in designing the Industry Standard Architecture bus (which made it easy to plug external devices into IBM’s PCs), laid the groundwork for color PC monitors and led the team that created the first gigahertz microprocessor. And despite his many accomplishments shaping our modern computing landscape, Dean isn’t afraid to admit that the PC may now be going the way of the dodo.

IBM’s 5150 PC with a color monitor


It’s impressive enough that he was instrumental to so many significant projects, but it’s even more remarkable in an industry where African-American representation is still an issue today. When younger tech companies like Google are reporting that only 2 percent of its workforce is black and only 3 percent is Hispanic in 2014, it’s tough to imagine what the landscape was like for minorities decades ago. (IBM, for its part, claims a long history of diversity initiatives.) When we asked if he noticed much of a change in the tech industry’s diversity over the years, Dean said in an email:

[pull_quote_center]I personally believe most of the industry [doesn’t] understand the benefits of a diverse workforce (awareness of societal norms and biases, cross-sectional innovation, diversity of leadership styles, out-of-the-box thinking, brand strength across all parts of society, better understanding of emerging markets — domestic and international). Most industry leaders, including corporate boards, aren’t willing to do what it takes to make a difference and create a diverse workforce.[/pull_quote_center]

Throughout all of his work, he focused on predicting where computing was headed. Dean was right on target in the late ’90s, when he was dreaming up a magazine-sized tablet that could accept voice commands, play media and replace your PC. He predicted that we’d see that within 10 years, which was pretty much in line with the iPad’s debut in 2010. You might recall Dean’s surprising comments on the IBM PC’s 30th birthday, where he said the PC was “going the way of the typewriter” and revealed that his main computer was a tablet. He called IBM a “vanguard of the post-PC era” for selling its PC division to Lenovo in 2005 — perhaps a wise move given the slowdown of the PC marketover the past few years. And he argued the push away from commodity markets like PCs, printers and disk drives (RIP, Deskstar) allowed IBM to focus on next-level projects like the Watson supercomputer.

“I ignored the people attempting to block my progress and had no limits to who I talked to and in sharing my opinion,” Dean said when we asked how he dealt with issues around racism (which includes both the subtle, systemic type of racism, and the more obvious form). “I also was able to demonstrate my ideas to a point where it was hard to argue their viability. It took a lot of work and sacrifice. But I was confident and believed I had some good ideas. Fortunately, there were a few in the right leadership positions that agreed with my ideas.”

Born and raised in Jefferson City, Tennessee, Dean was gifted both athletically and academically. He headed to IBM after receiving a degree in electrical engineering from the University of Tennessee, where he would end up spending more than 30 years. Amid his work, he also earned a master’s degree from Florida Atlantic University and a doctorate from Stanford. Dean was the first African-American to become an IBM Fellow, the company’s highest distinction, and he was also named Black Engineer of the Year in 1997 and 2000. After several years as a VP at IBM’s research division, Dean rounded out his tenure at the company as CTO of the Middle East and Africa. He left the company in 2013 and is now serving as a John Fisher distinguished professor at the University of Tennessee.

As for his current work, Dean tells us he’s “looking to develop an alternative computing architecture leveraging what we know about neuroscience and brain structures.” Basically, it means rethinking the way we’ve thought about computers so far. “The brain tends to be good at processing large amounts of unstructured information in real time using very little power,” he said. “We also wish to move from a traditional ‘programming’ paradigm to a ‘learning’ paradigm. The hope is to make software development easier and more accurate, while we make the resulting applications more reliable, secure and adaptive.”

Dean’s ultimate advice to young people confronting racism at work: “Don’t give up.”

“If someone is blocking your ideas and advancement, find a different way to expose your proposals, innovations and request,” he said. “There is often someone at the next level or an associate manager that is willing to listen. To break through, you often have to be better than the rest. This takes a lot of work, but it is achievable. I would also suggest young people consider emerging areas of opportunity: bio-engineering, civil engineering, nano-technology, analytics, security, sensor technology, material science.”

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His Biography from

Synopsis Born in Jefferson City, Tennessee, in 1957, computer scientist and engineer Mark Dean helped develop a number of landmark technologies for IBM, including the color PC monitor and the first gigahertz chip. He holds three of the company’s original nine patents. He also invented the Industry Standard Architecture system bus with engineer Dennis Moeller, allowing for computer plug-ins such as disk drives and printers.
Early life and Education Computer scientist and inventor Mark Dean was born on March 2, 1957, in Jefferson City, Tennessee. Dean is credited with helping to launch the personal computer age with work that made the machines more accessible and powerful.From an early age, Dean showed a love for building things; as a young boy, Dean constructed a tractor from scratch with the help of his father, a supervisor at the Tennessee Valley Authority. Dean also excelled in many different areas, standing out as a gifted athlete and an extremely smart student who graduated with straight A’s from Jefferson City High School. In 1979, he graduated at the top of his class at the University of Tennessee, where he studied engineering.
Innovation with IBM Not long after college, Dean landed a job at IBM, a company he would become associated with for the duration of his career. As an engineer, Dean proved to be a rising star at the company. Working closely with a colleague, Dennis Moeller, Dean developed the new Industry Standard Architecture (ISA) systems bus, a new system that allowed peripheral devices like disk drives, printers and monitors to be plugged directly into computers. The end result was more efficiency and better integration.But his groundbreaking work didn’t stop there. Dean’s research at IBM helped change the accessibility and power of the personal computer. His work led to the development of the color PC monitor and, in 1999, Dean led a team of engineers at IBM’s Austin, Texas, lab to create the first gigahertz chip—a revolutionary piece of technology that is able to do a billion calculations a second.In all, Dean holds three of the company’s original nine patents and, in total, has more 20 patents associated with his name.
Later Years
Despite his early success, Mark Dean continued to further his education. He earned his master’s degree in electrical engineering from Florida Atlantic University in 1982. Then, 10 years later, he completed his doctorate in the same field from Stanford University.While Dean’s name isn’t quite as well known as maybe other computer pioneers such as Bill Gates and Steve Jobs, the inventor hasn’t gone completely unrecognized. In 1996, he was named an IBM fellow, the first African-American ever to receive the honor. A year later, he was honored with the Black Engineer of the Year President’s Award and was inducted into the National Inventors Hall of Fame. In 2001, he was tapped to be a member of the National Academy of Engineers.”A lot of kids growing up today aren’t told that you can be whatever you want to be,” Dean has said. “There may be obstacles, but there are no limits.