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Charles Petzold

Charles Petzold
Charles Petzold in 2015 (cropped).jpg
Born (1953-02-02) February 2, 1953 (age 64)
New Brunswick, New Jersey
Alma mater Stevens Institute of Technology
Employer Xamarin
Spouse(s) Deirdre Sinnott
Website www.charlespetzold.com

Charles Petzold (born February 2, 1953, New Brunswick, New Jersey) is an American programmer and technical author on Microsoft Windows applications. He is also a Microsoft Most Valuable Professional and was named one of Microsoft's seven Windows Pioneers.

He graduated with a Master of Science in Mathematics from Stevens Institute of Technology in 1975. Aside from writing books about Windows programming he has contributed to various magazines about computers.

He had an interest in electronic music and in 1977 started building electronic music instruments out of CMOS chips. In 1979, Petzold started building a computer-controlled digital electronic music synthesizer based on the Zilog Z80 microprocessor. This experience of digital circuitry and assembly language programming formed the basis of his book Code: The Hidden Language of Computer Hardware and Software.

Petzold purchased a two-diskette IBM PC in 1984 for $5,000. This debt encouraged him to use the PC to earn some revenue so he wrote an article about ANSI.SYS and the PROMPT command. This was submitted to PC Magazine for which they paid $800. This was the beginning of Petzold's career as a paid writer.

In 1984, PC Magazine decided to do a review of printers. They asked all current New York contributors to help with the review. Petzold showed the staff some small assembly-language programs he had written. Soon he was busy writing little 300-500 byte .COM file utilities for PC Magazine.

Petzold was soon getting so much freelance work from PC Magazine that he was able to quit his job.


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