This chapter presents the following content: Instruction fetch and execute, interrupts, i/o function, suggested reading: stallings chapter 3. | Chapter 02 Computer Organization and Architecture Top Level View of Computer Function and Interconnection 1 KEY POINTS The major computer system components (processor, main memory, I/O modules) need to be interconnected in order to exchange data and control signals. The most popular means of interconnection is the use of a shared system bus consisting of multiple lines. In contemporary systems, there typically is a hierarchy of buses to improve performance. Key design elements for buses include Arbitration (whether permission to send signals on bus lines is controlled centrally or in a distributed fashion); Timing (whether signals on the bus are synchronized to a central clock or are sent asynchronously based on the most recent transmission); And width (number of address lines and number of data lines). . Computer Components Virtually all contemporary computer designs are based on concepts developed by John von Neumann at the Institute for Advanced Studies,Princeton. Such a design | Chapter 02 Computer Organization and Architecture Top Level View of Computer Function and Interconnection 1 KEY POINTS The major computer system components (processor, main memory, I/O modules) need to be interconnected in order to exchange data and control signals. The most popular means of interconnection is the use of a shared system bus consisting of multiple lines. In contemporary systems, there typically is a hierarchy of buses to improve performance. Key design elements for buses include Arbitration (whether permission to send signals on bus lines is controlled centrally or in a distributed fashion); Timing (whether signals on the bus are synchronized to a central clock or are sent asynchronously based on the most recent transmission); And width (number of address lines and number of data lines). . Computer Components Virtually all contemporary computer designs are based on concepts developed by John von Neumann at the Institute for Advanced Studies,Princeton. Such a design is referred to as the von Neumann architecture and is based on three key concepts: Data and instructions are stored in a single read–write memory. The contents of this memory are addressable by location, without regard to the type of data contained there. Execution occurs in a sequential fashion (unless explicitly modified) from one instruction to the next. . Computer Components Program Concept There is a small set of basic logic components that can be combined in various ways to store binary data and to perform arithmetic and logical operations on that data. If there is a particular computation to be performed a configuration of logic components designed specifically for that computation could be constructed. We can think of the process of connecting the various components in the desired configuration as a form of programming. The resulting “program” is in the form of hardware and is termed a hardwired program. . Computer Components Hardwired systems are inflexible General .
