Career Profiles

Explore profiles of real professionals and students to learn how they got started, what they love about computing, and all about the fascinating work they do.
David Walden

David Walden

Retired Computing Professional

Degree(s):

B.A. (math), San Francisco State College, 1964
Graduate coursework, Computer science, MIT, 1966-1968
“Start reading the computing literature and find a way to begin building hardware or writing software now; don’t wait until you start taking formal computer courses. Practice so you write prose fast and well; it will help your thinking and give you an advantage over all those computer people from whom writing is hard.”

I discovered an IBM 1620 computer while studying math, at which I was not very good, and thereafter I spent a lot of time writing programs. Upon graduation, I applied for jobs as a computer programmer and was hired by MIT Lincoln Lab. There, I evolved from a novice to a journeyman computer programmer under the mentorship of Will Crowther, the author of the first computer adventure game. I then moved to BBN where I had to good fortune to become part of the small team that developed the packet-switching technology for the ARPANET, the precursor of the Internet.
Read Dave’s computing memoir for the IEEE History Center Global History Network:
http://walden-family.com/cshc/archive/pubs/walden-memoir.pdf

As I became an experienced computer programmer and learned about designing overall computer systems, my career evolved step by step: programmer, software project leader, department leader, assistant division director, and general manager. In these latter jobs I was involved in sales and marketing as well as management. An important lesson was that I couldn’t simultaneously be a manager and remain a top rank technical person. However, I could accomplish bigger things as a manager, and was able to see a variety of business situations: contract R&D, product start-up, growth system business, and business shut down. It was interesting and exciting.

I am a serial hobbiest, spending vast amounts of time on whatever hobby I have been interested in. Over the years these activities have included contract bridge, musical theater, postal chess, juggling, sailing, playing Irish traditional music, and now (in retirement) writing, editing, and self-publishing about computing history and business management. Curiously, the most recent area of interest involves lots of computing (website development, typesetting, publishing workflow, etc.). In addition I read a lot of fiction and try to see at least one movie a week: http://walden-family.com/public/movie-index.htm

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CGA palette
Mark Dean

If you have ever used a PC with a color display you have been acquainted with the work of Mark Dean. After achieving a Bachelor’s degree in electrical engineering from the University of Tennessee, Dean began his career at IBM. Dean served as the chief engineer on the team that developed the first IBM PC, for which he currently holds one third of the patents. With colleague Dennis Moeller, he developed the Industry Standard Architecture (ISA) systems bus, which enabled peripheral devices such as printers, keyboards, and modems to be directly connected to computers, making them both affordable and practical. He also developed the Color Graphics Adapter which allowed for color display on the PC. Most recently, Dean spearheaded the team that developed the one-gigahertz processor chip. Dean went on to obtain a MSEE from Florida Atlantic University and a Ph.D. in electrical engineering from Stanford University. He is a member of the National Academy of Engineering, has been inducted into the National Inventors Hall of Fame, and is the first African-American IBM Fellow.

Router
Sandra Lerner

It is difficult to imagine a time when computers were not capable of sharing information and resources with great ease. Sandra Lerner pushed the boundaries of network computing as one of the co-founders of Cisco Systems, which introduced one of the first commercially viable routers. The router was born while Sandra was working at Stanford University in the 1980’s after earning her Master’s degree there in Computer Science. To avoid the tedious task of transferring information between computers using floppy disks, she and co-founder of Cisco, Leonard Bosack, created a local area network, or LAN, between their campus offices using a multiprotocol router that Bosack developed. Shortly thereafter the pair started Cisco Systems, and began selling the router which was a success, because it could work with so many different types of computers. After Leaving Cisco in 1990, Lerner started the trendy cosmetics company Urban Decay and became a philanthropist and avid activist for animal rights.

Punch card from a COBOL program
Jean Sammet

Jean E. Sammet was one of the first developers and researchers in programming languages. During the 1950’s - 1960’s she supervised the first scientific programming group for Sperry Gyroscope Co. and served as a key member of the original COBOL (COmmon Business-Oriented Language) committee at Sylvania Electric Products. She also taught one of the first graduate programming courses in the country at Adelphi College. After joining IBM in 1961, she developed and directed the first FORMAC (FORmula MAnipulation Compiler). This was the first widely used general language and system for manipulating nonnumeric algebraic expressions. In 1979 she began handling Ada activities for IBM’s Federal Systems Division. Ada is a structured, object-oriented high-level computer programming language, designed for large, long-lived applications, where reliability and efficiency are paramount. Jean has a B.A. from Mount Holyoke College and an M.A. from the University of Illinois, both in Mathematics. She received an honorary D.Sc. from Mount Holyoke (1978).

Bletchley Park
Dr. Sue Black
Dr. Sue Black

Dr. Sue Black has demonstrated the power of social networking. She used Web 2.0 technologies to help raise awareness of, and critical funding for, Bletchley Park, the UK World War II center for decrypting enemy messages. She has also been an active campaigner for equality and support for women in technology fields, founding a number of online networking platforms for women technology professionals. A keen researcher, Dr. Black completed a PhD in software measurement in 2001. Her research interests focus on software quality improvements. She has recently won the PepsiCo Women's Inspiration Network award, been named Tech Hero by ITPRO magazine and was awarded the first John Ivinson Award from the British Computer Society. In 2011 Dr. Black set up The goto Foundation, a nonprofit organization which aims to make computer science more meaningful to the public, generate public excitement in the creation of software, and build a tech savvy workforce. Read Sue's blog about The goto Foundation: http://gotofdn.org

First computer mouse
Douglas Engelbart
Douglas Engelbart

In 1967, Douglas Engelbart applied for a patent for an "X-Y position indicator for a display system," which he and his team developed at the Stanford Research Institute (SRI) in Menlo Park, California. The device, a small, wooden box with two metal wheels, was nicknamed a "mouse" because a cable trailing out of the one end resembled a tail.

In addition to the first computer mouse, Engelbart’s team developed computer interface concepts that led to the GUI interface, and were integral to the development of ARPANET--the precursor to today’s Internet. Engelbart received his bachelor’s degree in electrical engineering from Oregon State University in 1948, followed by an MS in 1953 and a Ph.D. in 1955 both from the University of California, Berkeley.

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