what is the different between block, word, byte and bit?

Question

how can someone can calculate or convert one to other? or what is the amount of word to be said a block and so on?

Answer 1

These words have slightly different meanings in different computer architectures, but these are the common meanings:

Bit = smallest bit of data: a 0 or a 1

Byte = smallest addressable data: usually this is 8 bits ( binary 0 - 255, or -128 - 127). "Addressable" means that there an address that will read or write the contents of the byte. Traditionally, using US ASCII code, a byte is also a single character, but with unicode this is no longer true.

Word: A word is defined on a particular architecture as the most convenient size of data to handle. Some years ago it was commonly 2 bytes (= 16 bits). Now it is commonly 4 bytes (32 bits), and some newer architectures use 64-byte words. Virtual memory is addressed using words, so a process on a 32-bit machine can address 2^32 bytes of memory.

Block: This is a term used in a few different contexts. In any case it means a contiguous chunk of data. A disk block is the unit of disk storage managed by a disk controller. Typically it might be 1k - 32k, depending on the system. Blocks are also used for memory, where the meaning is similar - a unit of contiguous memory, for instance, the unit that is swapped out by a pager. Again, common values are anywhere from 512 bytes (= 1/2k) to 32k or even bigger.

Answer 2

One bit is equivalent to one binary piece of information - 0 or 1 (off and on).

8 bits is equivalent to one byte, which is one unit of storage.

A block is essentially a block of information in bits or bytes.

And a word is a group of bits of data processed together.

Answer 3

Bit = smallest digital representation

Byte = 8 bits (one character)

Word and Block size vary from machine to machine

K = 1024 bytes (even tho you didn't ask for this)

Answer 4

Byte me.