Computer Organization and Operating Systems Notes pdf – CO&OS notes pdf

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Here you can download the free lecture Notes of Computer Organization and Operating Systems Notes pdf – CO&OS notes pdf materials with multiple file links to download.Operating Systems  and Computer Organization pdf notes book starts with the topics covering BASIC STRUCTURE OF COMPUTERS, Memory hierarchy, I/O Vs memory Bus, Computer System Structure, FILE SYSTEM INTERFACE, etc.

Computer Organization and Operating Systems Notes pdf – CO&OS notes pdf file

Computer Organization and Operating Systems Notes pdf | CO&OS notes pdf | Computer Organization and Operating Systems | Computer Organization and Operating Systems Notes | CO&OS Notes

Computer Organization and Operating Systems Notes pdf – CO&OS pdf notes – CO&OS notes pdf file to download are listed below please check it –

Link:Complete Notes

Unit 1

Link:Unit 1 Notes

Unit 2 

Link:Unit 2 Notes

Unit 3

Link:Unit 3 Notes

Unit 4 

Link:Unit 4 Notes

Unit 5

Link:Unit 5 Notes


Note :- These notes are according to the R09 Syllabus book of JNTU.In R13 and R15,8-units of R09 syllabus are combined into 5-units in R13 and R15 syllabus. If you have any doubts please refer to the JNTU Syllabus Book.


BASIC STRUCTURE OF COMPUTERS,Computer Types,Functional Unit,Basic Operational concepts,Bus structures,Software performance,Multiprocessors and multi computers,Data Representation,Fixed point Representation,Floating- point Representation.


Memory hierarchy,Main Memory,RAM,ROM Chips,Memory Address map,Memory Connection to CPU,Associate memory,Cache Memory,Data cache,Instruction cache,Miss and Hit ratio,Access time,Associative mapping,Set associative mapping,Waiting into cache,Introduction to virtual memory.Making programs and data available at a rapid rate, it is possible to increase the performance rate of the
computer. While the I/O processor manages data transfers between auxiliary memory and main memory, the
cache organization is concerned with the transfer of information between main memory and CPU.


I/O Vs memory Bus,Isolated Vs Memory-Mapped I/O,Asynchronous data Transfer,Strobe control,Hand Shaking,Asynchronous Serial transfer,Asynchronous Communication interface,Modes of transfer,Programmed I/O,Interrupt Initiated I/O ,DMA,DMA controller,DMA Transfer,IOP-CPU-IOP Communication,Intel 8089 IOP,INPUT-OUTPUT INTERFACE,I/O BUS AND INTERFACE MODULES,I/O VERSUS MEMORY BUS,ISOLATED VERSUS MEMORY-MAPPED I/O,ASYNCHRONOUS DATA TRANSFER,STROBE CONTROL,HANDSHAKING,ASYNCHRONOUS SERIAL TRANSFER,Asynchronous Communication Interface,MODES OF TRANSFER,EXAMPLE OF PROGRAMMED I/O,INTERRUPT-INITIATED I/O.

Computer Organization and Operating Systems  pdf Notes


Computer System Structure,Four Components of a Computer System ,Operating System Definition ,Computer Startup ,Computer System Organization ,Computer-System Operation ,Common Functions of Interrupts,Interrupt Handling ,Interrupt Timeline ,I/O Structure ,Direct Memory Access Structure ,Storage Structure,Storage Hierarchy,Caching ,Computer-System Architecture ,Asymmetric Multiprocessing ,Symmetric Multiprocessing ,A Dual-Core Design .


FILE SYSTEM INTERFACE, Introduction,Concept of a File,File Access methods,Directory Structure,Allocation Methods,Free Space management,Directory Implementation,The operating system is a resource manager. Secondary resources like the disk are
also to be managed. Information in secondary storage because it costs less,
is non-volatile and provides large storage space. Processes access data / information
present on secondary storage while in execution.Thus, the operating system has to
properly organize data / information in secondary storage for efficient access.


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