Primary memory can be accessed by the data bus whereas Secondary memory is accessed by I/O channels. Primary memory data is directly accessed by the processing unit whereas Secondary memory data cannot be accessed directly by the processor.Monitor, Printer graphic Output devices, Plotters, Speakers etc.Primary memory can be accessed by the data bus whereas Secondary memory is accessed by I/O channels. Primary memory data is directly accessed by the processing unit whereas Secondary memory data cannot be accessed directly by the processor.
Answers
Answer:
KEY DIFFERENCE
Primary memory is also called internal memory whereas Secondary memory is also known as a Backup memory or Auxiliary memory.
Primary memory can be accessed by the data bus whereas Secondary memory is accessed by I/O channels.
Primary memory data is directly accessed by the processing unit whereas Secondary memory data cannot be accessed directly by the processor.
Comparing primary and secondary storage devices, Primary storage devices are costlier than secondary storage device whereas Secondary storage devices are cheaper compared to primary storage device.
When we differentiate primary and secondary memory, Primary memory is both volatile & nonvolatile whereas Secondary memory is always a non-volatile memory.
Hope this helps you !!!