MICROPROCESSOR AND MICROCONTROLLER

Detailed explanation-1: -Computer memory is of two basic type – Primary memory(RAM and ROM) and Secondary memory(hard drive, CD, etc.). Random Access Memory (RAM) is primary-volatile memory and Read Only Memory (ROM) is primary-non-volatile memory. It is also called as read write memory or the main memory or the primary memory.

Detailed explanation-2: -The two main types of primary storage are ROM, which is non-volatile, and RAM, which is volatile . Non-volatile memory keeps its contents even when the computer is switched off. Volatile memory loses its contents when power is lost.

Detailed explanation-3: -Another difference between ROM and RAM is the amount of space they contain. ROM chips can only store several megabytes (MB) of data, usually amounting to between 4 and 8 MB per ROM chip. RAM chips can store multiple gigabytes (GB); this storage often ranges from 1 to 265 GB per RAM chip.

Detailed explanation-4: -Primary memory is a computer system’s volatile storage mechanism. It may be random access memory (RAM), cache memory or data buses, but is primarily associated with RAM.

Detailed explanation-5: -Primary memory is computer memory that is accessed directly by the CPU. This includes several types of memory, such as the processor cache and system ROM. However, in most cases, primary memory refers to system RAM. RAM is volatile memory, meaning it is erased when the power is turned off.