what is ROM ? how does it differ from RAM
Answers
Explanation:
RAM is volatile memory that temporarily stores the files you are working on. ROM is non-volatile memory that permanently stores instructions for your computer.
Answer:
what is ROM ? how does it differ from RAM
The following are the important differences between RAM and ROM
RAM stands for Random Access Memory.
ROM stands for Read-Only Memory.
2 Data Retention
RAM data is volatile. Data is present till power supply is present.
ROM data is permanent. Data remains even after the power supply is not present.
3 Data Access
RAM data can be read, erased or modified.
ROM data is read-only.
4 Usage
RAM is used to store data that CPU needs for current instruction processing.
ROM is used to store data that is needed to bootstrap the computer.
5 Speed
RAM speed is quite high.
ROM speed is slower than RAM.
6 CPU Access
CPU can access data stored on RAM.
Data to be copied from ROM to RAM so that the CPU can access its data.
7 Capacity
RAM memory is large and high capacity.
ROM is generally small and of low capacity.
8 Usage
RAM is used as CPU Cache, Primary Memory.
ROM is used as firmware by microcontrollers.
9 Cost
RAM is costly.
ROM is cheap.