Due to RAM architecture, the memory cells can be accessed for information from anywhere on the computer system.
This communication between different peripherals and RAM is achieved by data input and output lines, control lines which specify the direction of transfer, and address selection lines.
The n data input lines deliver the all information which are hold in the memory, and n data output lines transfer the information that is come out of specific word selected among the 2k available. inside the memory.
Types of RAM
*SRAM (Static Random Access Memory) - is made up of four to six transistors. The word static indicates that the memory retains its contents as long as power is being supplied unlike DRAM, which has to be refreshed periodically.
*DRAM (Dynamic Random Access Memory) - is widely used as a computer’s main memory. Each DRAM memory cell is made up of a transistor and a capacitor within an integrated circuit, and a data bit is stored in the capacitor. DRAM must be continually refreshed in order to maintain the data. This is done by placing the memory on a refresh circuit that rewrites the data several hundred times per second.
*VRAM (Video Random Access Memory)
RAM architecture
