Memory is one of the important components of a computer. It is a bridge between external memory and CPU, and all programs in the computer run in memory. The strength of memory performance affects the overall performance of the computer.
Memory, also known as memory and main memory, is used to temporarily store operation data in CPU and data exchanged with external memory such as hard disk. As soon as the computer starts running, the operating system will transfer the data to be calculated from the memory to the CPU for operation. When the operation is completed, the CPU sends the result. The running of memory also determines the overall speed of the computer. The memory stick consists of a memory chip, a circuit board and a gold finger.
Memory generally uses semiconductor memory cells, including random access memory (RAM), read-only memory (ROM) and cache. Just because RAM is the most important memory. (synchronous) SDRAM synchronous dynamic random access memory: SDRAM has the pin of 168, which is the memory used by Pentium and above models at present.
SDRAM locks CPU and RAM together through the same clock, so that CPU and RAM share a clock cycle and work synchronously at the same speed. The rising edge of each clock pulse starts to transmit data, which is 50% faster than EDO memory.
DDR (Double Data Rate) RAM: an updated product of SDRAM, which allows data to be transmitted at the rising and falling edges of clock pulses, thus doubling the speed of SDRAM without increasing the clock frequency.