- Howard Johnson (electrical engineer)
Dr. Howard Johnson is an electrical engineer, known for his consulting work and commonly referenced books on the topic of
signal integrity, especially for high speed electronic circuit design.
Area of contribution
Dr. Johnson has significantly raised awareness of analog effects at work in high speed digital electronic systems. In modern digital systems, it is common for digital designs to be subject to analog effects, even if they operate at a relatively low clock frequency. Circuits operating at lower clock rates can behave as high speed digital systems if there is sufficient high frequency content in the signal edges (when transitioning between digital logic levels) relative to the distance traveled across a
printed circuit board. As a result of improvements in semiconductor process, faster edge rates of even "low technology" electronic components can be sufficient to make the system effectively high speed and thus subject to havoc caused by unanticipated analog effects.
Dr. Johnson was also active in the development of two
Institute of Electrical and Electronics Engineersstandards that govern Ethernet, IEEE 802.3 Fast Ethernet and IEEE 802.3 Gigabit Ethernet.
Dr. Johnson earned his
Bachelor of Sciencein Electrical Engineering (1978), Masters of Electrical Engineering (1979), and PhD (1982) from Rice University. His dissertation was titled "The design of DFT algorithms".
Dr. Johnson has written three books.
* "High-Speed Digital Design: A Handbook of Black Magic"
* "High-Speed Signal Propagation: Advanced Black Magic"
* "Fast Ethernet: Dawn of a New Network"
Dr. Johnson was recognized by the IEEE as an "Outstanding Contributor" to the IEEE P802.3z Gigabit Task Force.cite web|url=http://grouper.ieee.org/groups/802/3/z/public/presentations/july1998/award.html |title=IEEE P802.3z Outstanding Contributor Awards |accessdate=2006-07-09
Wikimedia Foundation. 2010.
См. также в других словарях:
Howard Johnson — Several prominent people have been named Howard Johnson:*Howard David Johnson (artist), a contemporary photorealist painter focusing on mythology and religion *Howard Deering Johnson (1897 ndash;1972), founder of Howard Johnson s restaurants… … Wikipedia
History of perpetual motion machines — The history of perpetual motion machines dates back to the Middle Ages. For millennia, it was not clear whether perpetual motion devices were possible or not, but the development of modern thermodynamics has indicated that they are impossible.… … Wikipedia
List of Cornell University people — Cornellians are persons affiliated with Cornell University, commonly including alumni, current and former faculty members, students, and others. Here follows a list of notable Cornellians.40 Nobel laureates have been affiliated with Cornell as… … Wikipedia
List of Cornell University alumni — This list of Cornell University alumni includes notable graduates, non graduate former students, and current students of Cornell University, an Ivy League university located in Ithaca, New York. Alumni are known as Cornellians. Contents 1 Nobel… … Wikipedia
Massachusetts Institute of Technology — Motto Mens et Manus Motto in English Mind and Hand … Wikipedia
List of University of Michigan alumni — There are more than 425,000 living alumni of the University of Michigan. Famous alumni include the father of the iPod, the founders of Sun Microsystems and Google, the father of information theory, the voice of Darth Vader, the first doctor… … Wikipedia
Polytechnic Institute of New York University — Coordinates: 40°41′40″N 73°59′12″W / 40.694412°N 73.986531°W / 40.694412; 73.986531 … Wikipedia
List of people from Michigan — A list of notable people from the U.S. state of Michigan. Bolding indicates places in Michigan. People from Michigan are sometimes referred to as Michiganders, Michiganians, or more rarely as Michiganites. Actors, entertainers and… … Wikipedia
List of Ohio State University people — Notable alumni= : Please note that the names listed may have only attended the University at one point and not have necessarily graduated. National and international award winnersNobel Laureates*Paul Flory, 1974 Nobel laureate in Chemistry (Ph.D … Wikipedia
List of English people — This is a partial list of English people of note and of some notable individuals born in England, alphabetically within categories.Actors and actresses*Dame Julie Andrews (born 1935) *Naveen Andrews (born 1969) *Gabrielle Anwar (born 1970) *Rowan … Wikipedia