storage device
In the memory, information of the small quantity is stored to each cell with the row of cells added a house number to. It is an order to teach what this information should do to a computer when there is it. In addition, the data becoming the object that a computer carries out an order to a cell are stored. All cells store away this either and sometimes store an order by data again once. The contents of the memory cell are generally renewed anytime. In other words it is almost a graffiti book rather than slate. The number of cells is different from the size of each cell every computer greatly. In addition, the technology to implement memory changed greatly with the times. A method an electromagnetic relay continued, and to put a sound wave through the mercurial pipe (mercurial delay line) and spring which entered was used first. An arrangement (magnetic core memory) and the transistor of the permanent magnet were used next. An integrated circuit (DRAM) which accumulated millions of condensers and transistors on one semiconductor chip is used mainly by the present.