RoughNeckHardware

different RAM’s June 26, 2008

Computers use RAM to hold the program code and data during computation. A defining characteristic of RAM is that all memory locations can be accessed at almost the same speed. Most other technologies have inherent delays for reading a particular bit or byte. These days computers are coming with DDR2 RAM. You also have different kinds of RAM’s like SDRAM, DDR, RDRAM, DDR 2, DDR 3 and many others. Many of the RAM’s are volatile, which means that unlike some other forms of computer storage such as disk storage, they lose all data when the computer is powered down. Modern RAM generally stores a bit of data as either a charge in a capacitor, as in dynamic RAM, or the state of a flip-flop, as in static RAM. Currently, several types of non-volatile RAM are under development, which will preserve data while powered down. The technologies used include carbon nanotubes and the magnetic tunnel effect.