为什么你电脑里没有A或B盘？而是从C盘开始呢，原来是这样啊！
大家对电脑应该不会陌生了吧，作为这个时代的产物，电脑给我们带来了很多的方便，不仅提高了我们的工作效率，还可以娱乐我们的生活，在这个互联网时代，可以说跟手机一样，成为了我们生活中不可缺少的一部分。
但是，对电脑已经如此熟悉的你，有没有发现一个问题，就是电脑的硬盘里边为什么是从C盘开始的，A、B盘去哪了？
其实，在计算机刚诞生的时候，是没有硬盘的，那时候数据存储靠的是软盘，因为软盘比较容易拆卸，所以软盘驱动器按照顺序占据了A、B的位置。
第一块硬盘从发明到现在已经有半个多世纪，它是由IBM公司制造的。当时作为世界上的第一块硬盘，还是比较大个的，它的重量相当于两台冰箱那么重，并且它的存储值只有5MB,因为那么大的体积和那怎么重的身躯，主要是空间又那么小，所以，在现实生活中并没有多大的用处。虽然第一个硬盘相对来说不是那么成功，但却是人类非常成功的一步，为以后的计算机发展奠定了基础。
后来，随着1973年温盘的问世，改变了这个现状，让硬盘代替软盘这一目标有了希望。是计算机制造业迈向成功的一大步。后来，随着硬盘制造业的发展，它的体积开始慢慢变小，变成了可以替代软盘的精简型硬盘。这对于计算机的软盘而言，如今的硬盘更加实用、高效。同时它也减轻了电脑器件的重量，让电脑变得更加轻便。
早期的电脑因为没有硬盘和光驱，所以人们把电脑所有重要的文档都放在软盘上，而启动电脑的时候也需要一个软盘作为驱动盘，这就是早期电脑为什么需要两个A、B软盘的原因，这也就是早期电脑的两个光驱，也就是A、B盘的产生。后来有了硬盘之后，A、B盘的位置逐渐被占据，但是科学家们为了纪念之前A、B两个软盘做出的贡献，盘符就从C盘开始，依次向后为D、E、F。
如今，随着科技的进步与发展，软盘已经渐渐的被淘汰，A、B盘也都是因为电脑的携带不便而被淘汰，所以通常人们只能在电脑中看见C盘及以后的盘符而看不见A、B的盘符。
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