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Until now, treated the memory system as a. "black box", which stores the program and data, from which the processor fetches the instructions to execute at the processing subunits, and into which the processor could place data for retrieval later
BASIC CONCEPTS OF MEMORY SYSTEM. The maximum size of the Main Memory (MM) that can be used in any computer is determined by its addressing scheme. For example, a 16-bit computer that generates Source : elearningatria.files.wordpress.com/2013/10/cse-iv-computer- organization-10cs46-notes.pdf.
•Tree and Matrix decoders–needed for large RAM chips. •Dynamic RAM–less expensive, but needs “refreshing". •Chip organization. •Timing. •ROM–Read only memory. •Memory Boards. •Arrays of chips give more addresses and/or wider words. •2-D and 3-D chip arrays. • Memory Modules. •Large systems can benefit by
This chapter begins the discussion of memory systems from the implementation of a single bit. The architecture of memory chips is then constructed using arrays of bit implementations coupled with familiar digital logic components such as decoders, transmission gates and multiplexors to access groups of bits such as words
To this point in our study of systems, we have relied on a simple model of a computer system as a CPU that executes instructions and a memory system that holds instructions and data for the CPU. In our simple model, the memory system is a linear array of bytes, and the CPU can access each memory location in a constant
Memory Systems: Cache, DRAM, Disk is the first book that takes on the whole hierarchy in a way that is consistent, covers the complete memory hierarchy, and treats each aspect in significant detail. This book will serve as a definitive reference manual for the expert designer, yet it is so complete that it can be read by a
Memory Systems. Doug Burger. University of Wisconsin-Madison. A computer's memory system is the repository for all the information that the computer's central processing unit (CPU, or processor) uses and produces. A perfect memory system is one that can supply immediately any datum that the CPU requests. This ideal
Advanced Reliable Systems (ARES) Lab. Jin-Fu Li, EE, NCU. 4. Basic Concepts. ? The maximum size of the memory that can be used in any computer is determined by the addressing scheme. ? For example, a 16-bit computer that generates 16-bit addresses is capable of addressing up to 216=64K memory locations.
The memory system serves as the repository of information (data) in a computer system. The processor (also called the central processing unit, or CPU) accesses (reads or loads) data from the memory system, performs computations on them, and stores (writes) them back to memory. The memory system is a collection of
The maximum size of the memory that can be used in any computer is determined by the addressing scheme. 16-bit addresses = 216 = 64K memory locations. 0. Most modern computers are byte addressable. 2 k. 4-. 2 k. 3-. 2 k. 2- 2 k. 1-. 2 k. 4-. 2 k. 4-. 0. 1. 2. 3. 4. 5. 6. 7. 0. 0. 4. 2 k. 1- 2 k. 2- 2 k. 3-. 2 k. 4-. 3. 2. 1. 0. 7. 6. 5.
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