write the difference between primary and secondary memory? in points
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Primary memory
1. Primary memory is the memory that is directly accessed by the CPU to store and retrieve information. Most of the time, primary memory is also referred to as the RAM (Random Access Memory).
2. It is a volatile memory, which loses its data when the power is turned off. Primary memory is directly accessible by the CPU through the address and memory bus and it is constantly accessed by the CPU to get data and instructions.
3. Furthermore, computers contain a ROM (Read Only Memory), which holds instructions that are executed often such as the startup program (BIOS).
4. This is a non volatile memory that retains its data when the power is turned off. Since the main memory is accessed often, it needs to be faster. But they are smaller in size and also costly.
Secondary Memory
1. Secondary memory is a storage device that is not accessible directly by the CPU and used as a permanent storage device that retains data even after power is turned off.
2.CPU accesses these devices through an input/ output channel and data is first transferred in to the primary memory from the secondary memory before accessing.
3.Usually, hard disk drives and optical storage devices (CDs, DVDs) are used as secondary storage devices in modern computers. In a secondary storage device, data are organized in to files and directories according to a file system.
4.This also allows to associate additional information with data such as the access permissions, owner, last access time, etc. Furthermore, when the primary memory is filled up, secondary memory is used as a temporary storage for keeping least used data in the primary memory.
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1. Primary memory is the memory that is directly accessed by the CPU to store and retrieve information. Most of the time, primary memory is also referred to as the RAM (Random Access Memory).
2. It is a volatile memory, which loses its data when the power is turned off. Primary memory is directly accessible by the CPU through the address and memory bus and it is constantly accessed by the CPU to get data and instructions.
3. Furthermore, computers contain a ROM (Read Only Memory), which holds instructions that are executed often such as the startup program (BIOS).
4. This is a non volatile memory that retains its data when the power is turned off. Since the main memory is accessed often, it needs to be faster. But they are smaller in size and also costly.
Secondary Memory
1. Secondary memory is a storage device that is not accessible directly by the CPU and used as a permanent storage device that retains data even after power is turned off.
2.CPU accesses these devices through an input/ output channel and data is first transferred in to the primary memory from the secondary memory before accessing.
3.Usually, hard disk drives and optical storage devices (CDs, DVDs) are used as secondary storage devices in modern computers. In a secondary storage device, data are organized in to files and directories according to a file system.
4.This also allows to associate additional information with data such as the access permissions, owner, last access time, etc. Furthermore, when the primary memory is filled up, secondary memory is used as a temporary storage for keeping least used data in the primary memory.
Hope it help you !
Please mark as brainliest .
01Prachi:
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Primary memory can be directly accessed by the CPU whereas the CPU can not directly access the secondary memory. The primary memory of the computer is also known as the main memory of the computer. However, secondary memory is known as auxiliary memory.
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