Modern Operating Systems
|  First edition, 1992 | |
| Author | Andrew S. Tanenbaum (and Herbert Bos for 4th and 5th editions) | 
|---|---|
| Language | English, German | 
| Series | Learning | 
| Subject | covers current UNIX® standards (POSIX.1-2001 /SUSv3 and POSIX.1-2008 /SUSv4 ) | 
| Published | 1st edition 1992 2nd edition 2001 3rd edition 2007 4th edition March 20, 2014 5th edition 2022 | 
| Publisher | Prentice Hall (1st-3rd) Pearson PLC (4th-5th) | 
| Pages | 1101 | 
| ISBN | 978-0133591620 | 

Modern Operating Systems is a book written by Andrew Tanenbaum, a version (which does not target implementation) of his book Operating Systems: Design and Implementation. It is now in its 5th edition, published October 2022 (ISBN 9780137618880), written together with Herbert Bos.
Modern Operating Systems (mostly known as MOS) is a popular book across the globe and includes the fundamentals of an operating system with small amounts of code written in autonomous C language. MOS describes many scheduling algorithms.