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Chapter 1: Problem 1

Both main memory and secondary storage are types of memory. Describe the difference between the two.

Short Answer

Expert verified
Answer: The main differences between main memory and secondary storage include volatility, speed, cost, and capacity. Main memory (RAM) is volatile, fast, expensive, and has limited capacity, while secondary storage is non-volatile, slower, less expensive, and has larger capacity. Main memory stores data and programs currently in use by the processor, while secondary storage is used for long-term data storage.

Step by step solution

01

Define Main Memory

Main memory, also known as primary memory or RAM (Random Access Memory), is a volatile memory that stores data and programs currently being used by the computer's processor. It enables the processor to access the data quickly, allowing various applications to run smoothly.
02

Define Secondary Storage

Secondary storage, also known as external or auxiliary storage, is a non-volatile memory that stores data and information permanently, even when the computer is turned off. It includes hard drives, solid-state drives (SSDs), CD-ROMs, and USB drives, among others.
03

Main Characteristics of Main Memory

Here are the main characteristics of main memory: 1. Volatile: Data is lost when the computer is turned off. 2. Fast: Allows quick access to data and programs by the processor. 3. Expensive: Generally more costly when compared to secondary storage in terms of price per unit of storage. 4. Limited capacity: Typically holds a smaller amount of data compared to secondary storage.
04

Main Characteristics of Secondary Storage

Here are the main characteristics of secondary storage: 1. Non-volatile: Data is retained even when the computer is turned off. 2. Slower: Access to data and programs is slower compared to main memory. 3. Less expensive: More affordable when compared to main memory in terms of cost per unit of storage. 4. Larger capacity: Can store a larger amount of data when compared to main memory.
05

Summary

In summary, main memory (RAM) is a volatile, fast, and expensive type of memory with limited capacity, used for storing data and programs currently in use by the computer's processor. Secondary storage, on the other hand, is a non-volatile, slower, and less expensive type of memory with larger capacity, primarily used for long-term data storage.

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