存储容量单位表示方法的探讨  

Study on Representation for Units of Storage Capacity

作　　者：史江瑾[1] 王洪生[2] 汪琳[1] 初剑[1] 

机构地区：[1]南京电子技术研究所,江苏省南京市210013 [2]南京邮电大学,江苏省南京市210003

出　　处：《电子工程师》2006年第3期50-53,共4页Electronic Engineer

摘　　要：存储容量是存储器的一项主要技术指标。目前,存储容量的单位通常采用SI(国际单位制)词头(简称十进制词头)符号与字节符号B构成的十进制倍数单位,亦即用K或k(1 03=1 000)表示210=1 024,用M(106=1 0002)表示220=1 0242,等等,因此,它们与真实数值存在误差,数值越大,其误差越大,常常造成误解,甚至引起纠纷。而且,还存在词头K和k混用、词头独立使用等问题。因此,应规范使用十进制词头k,构建二进制词头,避免独立使用词头。建议采用二进制词头构成倍数单位,用K i代替k(或K)表示210=1 024,用M i代替M表示220=1 0242,用G i代替G表示230=1 0243,用Ti代替T表示240=1 0244。Storage capacity is the major technical indicator of storage device. Currently, the units of storage capacity usually uses decimal multiple unit which consist of the SI prefix symbol and character symbol B, that means use K or k （10^3 = 1 000 ） to represent 2^10 =1 024, use M（ 10^6 = 1 000^2） to represent 2^20 = 1 0242, etc. So, there is difference between capacity number with real number. The larger capacity leads to the bigger difference. That usually makes customer to misunderstand or even complain. Besides, there are also problems such as misuse of prefix K and k, prefix separate use, etc. So we should use properly the decimal prefix k, construct binary prefix, and avoid separate use of prefix. The article suggests using binary prefix as the indicator, like using Ki to replace k （ or K ） to represent 2^10= 1 024, Mi to replace M to represent 2^20 = 1 024^2, Gi to replace G to represent 2^30 = 1 024^3, Ti to replace T to represent 2^40 = 1 024^4.

关 键 词：存储容量 单位 倍数单位 词头 字节 二进制 十进制 

分 类 号：TP333.1[自动化与计算机技术—计算机系统结构]