COMPUTER STORAGE MEDIA

Computer Storage Media
There are two types of storage media in computing:

• Primary storage (memory)
• Secondary storage

Primary storage
this is the memory that provides the brain of a computer withe data and instructions at run time.
Primary storage is basically divided into two:

• Random Access Memory(RAM)
• Read Only memory (ROM)

The RAM is responsible for holding data and instruction for the processor to process. Once a computer is booted, all the programs in execution / open programs are held by the RAM.

That is, the brain of a computer has direct access to the RAM.

RAM is volatile. One can write into it and read from it at random.

ROM is built into logic of the memory chips and fixed into the mother board with some programs supplied by the manufacturer to operate the computer. The basic input and out put program is stored in the ROM. This program in the ROM is responsible for examining and initializing various equipment attached to the computer when the computer is from it. It is  non-volatile

Types of ROM

there are two types of ROM:

programmable read only memory(PROM)

Erasable Programmable read only memory(EPROM)

PROM is a type of ROM that will enable one to load or store program in it but you can not modify      or erase programs stored in it.
EPROM: can be programmed and programs earlier stored in it can be erased.