tb是太兆mb是兆那kb是什么还有k是什么
1Byte=8Bit1KB=1,024Bytes1MB=1,024KB=1,048,576Bytes1GB=1,024MB=1,048,576KB=1,073,741,824Bytes1TB=1,024GB=1,048,576MB=1,073,741,824KB=1,099,511,627,776Bytes1PB=1,024TB=1,048,576GB=...=1,125,899,906,842,624Bytes1EB=1,024PB=1,048,576TB=...=1,152,921,504,606,846,976Bytes1ZB=1,024EB=...=1,180,591,620,717,411,303,424Bytes1YB=1,024ZB=...=1,208,925,819,614,629,174,706,176Bytes目前YB是计算机界已知最大的储存空间单位.以一个250GB的硬盘而言,1YB就需要约4兆5千亿个这样的硬盘.再大的单位恐怕在短期间内是还用不到的.