20. Main Memory
The chapter provides a comprehensive overview of main memory in computer architecture, focusing on its types, organization, and interaction with the CPU. It differentiates between internal and external memory, emphasizing the characteristics of RAM and ROM, and explains how memory addresses are generated and utilized. The concepts of cache memory, memory registers, and the distinctions between static and dynamic RAM are also explored, culminating in practical insights into memory configuration and operations.
Enroll to start learning
You've not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- Main memory is crucial for executing instructions in a CPU.
- There are different types of memory including RAM, ROM, and cache memory, each serving specific functions and characteristics.
- Memory organization impacts how data is accessed and processed in computing systems.
Key Concepts
- -- Main Memory
- The primary storage area for data and instructions for immediate processing by the CPU, primarily consisting of RAM and ROM.
- -- Random Access Memory (RAM)
- A type of volatile memory used for temporary data storage that can be accessed randomly, allowing data to be read or modified quickly.
- -- Read Only Memory (ROM)
- A type of non-volatile memory that holds critical data permanently and cannot be modified or written to.
- -- Cache Memory
- A small, high-speed storage area that temporarily holds frequently accessed data from the main memory to speed up processing.
- -- Dynamic RAM (DRAM)
- A type of volatile memory that must be refreshed periodically, commonly used for main system memory due to its higher capacity and lower cost compared to static RAM.
- -- Memory Address Register
- A register in a CPU that holds the address of the memory location from which data will be read or to which data will be written.
- -- Memory Buffer Register
- A register that temporarily holds data that is being transferred to or from memory.
Additional Learning Materials
Supplementary resources to enhance your learning experience.