详细的内存大小识别方法（Memory size identification method in detail）.docVIP

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详细的内存大小识别方法（Memory size identification method in detail）.doc

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详细的内存大小识别方法（Memory size identification method in detail）

详细的内存大小识别方法（Memory size identification method in detail） Ha, you say no boot means not to open the lid or not the power. The number on the memory bar indicates the size is fixed, 32M, 64M, 128156M, 5121024M, and so on, and others like PC100, PC133, DDR266, DDR400, DDR533 and so on. Right click on my computer and select properties. You can see the memory size in the lower right corner of the general option! Memory is usually marked size, if not, it depends on the number of particles, and give you a look: Samsung memory Example: samsungk4h280838b-tcb0 First bit - chip function K, represents the memory chip. Second bit - chip type 4, stands for dram. Third bit - further description of the type of chip, s stands for SDRAM, H stands for DDR, and G stands for sgram. Fourth, fifth bits - capacity and refresh rate, the same memory capacity, different refresh rates, and different numbers. 64, 62, 63, 65, 66, 67, 6a represent the capacity of 64Mbit; 28, 27 and 2A represent the capacity of 128Mbit; 56, 55, 57 and 5A represent the capacity of 256Mbit; 51 represents the capacity of 512mbit. Sixth, seventh bits - data line pins, 08 represent 8 bits of data; 16 stands for 16 bits of data; 32 stands for 32 bits of data; 64 stands for 64 bits of data. Eleventh - wired -. Fourteenth, fifteenth bits - the rate of the chip, such as 60 for 6ns; 70 for 7ns; 7b for 7.5ns (cl=3); 7C for 7.5ns (cl=2); 80 for 8NS; 10 for 10ns (66MHz). Know that memory particles encode the meaning of the main digits, and get a memory bar, it is very easy to calculate its capacity. For example, a Samsung DDR memory using 18 samsungk4h280838b-tcb0 particle packages. Grain number fourth, fifth 28 on behalf of the particles is 128mbits, sixth, seventh 08 on behalf of the particles is 8 bits of data bandwidth, so we can calculate the memory capacity is 128mbits (MB digital) * 16 /8bits=256mb (megabytes). Note: bit is digital, B, that is, the byte byte, and a byte of 8 bits, divided by 8 when calculating. On the ca