we have supply continuous voltage after certain microseconds to maintain the contain of the memory .If we do not supply continuous supply of voltage after certain microseconds then the contents of the memory will be zero(0) from 1
Originally, RAM was an array of flip-flops, each being two transistors, with the ability to be set, reset, and interrogated. The contents were static, leading to the term Static RAM, and would stay...
static RAM:It is composed of registers ,which loses its content when power is switched off. dynamic RAM:It is composed of capacitors,which is a charging and discharging in nature.
SRAM does not need to be refreshed; basically it does have data remance although still volatile. Since it does not need to be refreshed it is better than dynamic ram, which needs to be refreshed...