Computer memory devices

Internal memory Random-access memory

• A computer processor can work only with the data that is stored in the cells of its RAM.
• Let's consider a schematic diagram of its organization (not to be confused with technical elements).
• Memory can be imagined like a sheet from a notebook in a box. Each cell can currently store only one of two values: zero or one.

Schematic diagram of random access memory

0-bite	0	1	0	1	1	0	0	0
1-bite	1	1	0	0	1	1	0	1
2-bite	1	0	1	0	1	1	1	1
3-bite	0	0	1	0	1	0	0	1
…

Bit

• A memory cell that stores one binary character is called a "bit".
• A bit is the smallest piece of computer memory.
• Consequently, the word "bit" has two meanings: it is a unit of measurement of the amount of information and a particle of computer memory. Both of these concepts are related to each other as follows: One bit of memory stores one bit of information.