From our text the main memory is the central storage unit in a computer system. It is a relatively large and fast memory used to store programs and data during the computer operation. The principal technology used for the main memory is based on semiconductor intergrated circuits. Intergrated circuit RAM chips are available in two possible operating modes, static and dynamic, The static Ram consists essentially of internal flip-flops that store the binary inforation. The …showed first 75 words of 1603 total…

…showed last 75 words of 1603 total…DRAM costs much less than a processor because it is a series of simple, repeated structures, so there isn't the complexity of making a single chip with several million individually-located transistors. The principles for DRAM manufacture are similar. There are many different kinds of specific DRAM technologies and speeds that they are available in. These have evolved over many years of using DRAM for system memory, and are discussed in more detail in other sections