Computer Fundamentals 简明教程

Computer - Memory Units

存储单元中可存储的数据量为存储单位。这种存储容量是按字节表示的。

Memory unit is the amount of data that can be stored in the storage unit. This storage capacity is expressed in terms of Bytes.

下表解释了主存储器存储单位 -

The following table explains the main memory storage units −

S.No.	Unit & Description
1	Bit (Binary Digit) A binary digit is logical 0 and 1 representing a passive or an active state of a component in an electric circuit.
2	Nibble A group of 4 bits is called nibble.
3	Byte A group of 8 bits is called byte. A byte is the smallest unit, which can represent a data item or a character.
4	Word A computer word, like a byte, is a group of fixed number of bits processed as a unit, which varies from computer to computer but is fixed for each computer. The length of a computer word is called word-size or word length. It may be as small as 8 bits or may be as long as 96 bits. A computer stores the information in the form of computer words.

下表列出了一些较高的存储单位 −

The following table lists some higher storage units −