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Questions and Answers
What is the von Neumann model capable of storing in each location?
What is the von Neumann model capable of storing in each location?
- Only instructions
- Addresses
- Only data
- Both instructions and data (correct)
What does the main memory consist of in the von Neumann model?
What does the main memory consist of in the von Neumann model?
- A collection of cache memory
- A collection of processors
- A collection of input/output devices
- A collection of locations (correct)
In the von Neumann model, what is used to access each location in the main memory?
In the von Neumann model, what is used to access each location in the main memory?
- Instructions
- Data
- Processor
- Address (correct)
What is the key feature of the serial hardware and software programs?
What is the key feature of the serial hardware and software programs?
What type of modifications are made to the von Neumann model in parallel hardware?
What type of modifications are made to the von Neumann model in parallel hardware?
What does virtual memory function as when running a very large program or a program that accesses very large data sets?
What does virtual memory function as when running a very large program or a program that accesses very large data sets?
What principle does virtual memory exploit?
What principle does virtual memory exploit?
What is the term used for the idle parts of a program that are kept in a block of secondary storage?
What is the term used for the idle parts of a program that are kept in a block of secondary storage?
What are the blocks of data and instructions in virtual memory known as?
What are the blocks of data and instructions in virtual memory known as?
What is the range of fixed page size for most systems in virtual memory?
What is the range of fixed page size for most systems in virtual memory?
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Study Notes
Von Neumann Model
- Each location in the von Neumann model is capable of storing both data and program instructions.
- The main memory in the von Neumann model consists of a single array of bytes, each with a unique address.
Accessing Main Memory
- Each location in the main memory is accessed using a unique address.
Serial Hardware and Software Programs
- The key feature of serial hardware and software programs is that they execute instructions one at a time.
Parallel Hardware Modifications
- In parallel hardware, the von Neumann model is modified to allow multiple instructions to be executed simultaneously.
Virtual Memory
- Virtual memory functions as a combination of RAM and secondary storage when running a very large program or a program that accesses very large data sets.
- Virtual memory exploits the principle of locality, which states that a program tends to access data and instructions in a limited area of memory.
- Idle parts of a program that are kept in a block of secondary storage are referred to as "pages".
- The blocks of data and instructions in virtual memory are known as "pages".
- The fixed page size for most systems in virtual memory ranges from 4KB to 8KB.
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