What Is Read-Write Memory?

In the single-chip computer system, the data memory is used to store data that can be modified at any time. The data memory expansion uses a random access memory chip, which is referred to as RAM. RAM can be read or written in two ways, but RAM is volatile memory, and the information stored after power off disappears.

Read and write memory

Right!

In the single-chip computer system, the data memory is used to store data that can be modified at any time. The data memory expansion uses a random access memory chip, which is referred to as RAM. RAM can be read or written in two ways, but RAM is volatile memory, and the information stored after power off disappears.

According to its working mode, RAM is divided into static and dynamic. Static RAM can save information as long as the power is turned on; dynamic RAM uses dynamic memory cells, which need to be constantly refreshed for periodic regeneration to save information. Dynamic RAM has a high integration density and integrates the same bit capacity. The chip area occupied by dynamic RAM is only a quarter of the static RAM. In addition, the power consumption of dynamic RAM is cheap. But to expand the dynamic memory to add a refresh circuit. Therefore, it is suitable for large-scale systems and is not widely used in single-chip microcomputer systems.