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  Mechanism of memory   

  1. ..clause 1..: Memory?
  2. ..clause 2..: Super-huge one row locker
  3. ..clause 3..: Number of bits of CPU
  4. ..clause 4.. locker in:32 bits

[1] Memory?

It is a word that becomes familiar with the person that the word memory is interested in the computer and is deep.
The computer data's being memorized in this memory
Even the person who doesn't know the computer well thinks that it is a story that has been heard.

Then, as general person's computer knowledge though it is enough
When the programming is done, it is insufficient only in it.
What kind of mechanism is that the memory memorizes data?
It might be firmly understood.

However, I will not not at all explain the structure of CMOS.
The important one is not a hardware mechanism but a software concept.
In what kind of mechanism can data be saved with the memory?
And, it explains by what method to handle the memory in the program.

It returns to contents.


[2] Super-huge one row locker

Quite a lot of electronic parts are built in the memory.
The each one has own state.
It is on or off of which the state.

As ..one.. off 0 if states of electronic parts are and on
Each part is 1 or 0 is memorized.

This is a structure like a super-huge one row locker if it compares it.
The number is not settled with a commonsense number such as 10 and 100.
500 million lockers or more queue up if it is a computer of the memory 64MB.

And, the locker is numbered.
Moreover, an individual locker has the state of luggage.
It counts as 0 when not is ..one.. when there is luggage.

The computer packs luggage in this locker, and memorizes the numerical value.
All numerical values are memorized by combining 1 and 0.
In short, the computer memorizes the numerical value by the binary number.

It returns to contents.


[3] Number of bits of CPU

The word bit might been heard.
Now, computers that we are using are 32 bits.
Though 64 bits CPU of the AMD Co. get into the news now (writing time of the manuscript)
We general users' coming to use is a previous still story.

By the way, what on earth is this bit?
Actually, it is very deeply related to the memory that is this theme.

It explained that the memory was a super-huge one row locker ahead.
And, it explained that the numerical value was recorded as a binary number.
However, because all these data is recorded by the binary number
When individual data is separately exchanged, it is very troublesome.

Then, it is a method of the summary in some measure use to hit on everyone.
For instance, if you use it among the data of the memory bringing 8 pieces together
In the binary number, it is numerical within the range of 00000000-11111111.
The number within the range of 0-255 is used by the decimal number and ..computable [].. size.
If it is this, it seems to be able to do the calculation of ..[matomo].. [kei] considerably.

That's right though there might be a person who has already noticed.
The digit number in the binary number of the memory that CPU treats by one time is a number of bits.
It is such roughly a meaning when saying that CPU is bits how many.
But..special instruction..any more..bit..number..once..computable..CPU..provide.

One bit means one binary number digit.
The unit of processing of CPU is 32 bits if ahead.


[4] Locker in 32 bits

It explained CPU handled several data of the memory in a lot.
And, many take care of 32 pieces in a lot as for a present computer.
This is called 32 bit computer.
It will pursue the subject here on the assumption of these 32 bits ahead.

The computer in 32 bits takes care of 32 data in a lot.
In a word, only have to sort 32 pieces and to use a super-huge one row locker.
However, it is actually sorted to 8 pieces, and of each is numbered.
To divide data into 8 pieces is to handle the memory in eight bits.

Eight bits are called one byte, and basic units of the computer.
Eight bits because of convenient in this treatment of various data.
Because the numerical value of 0-255 can be shown by eight bits, it is comparatively the best for the memory of a small numerical value.
Moreover, eight bits are digits with a good paulownia on the computer that works by the binary number.

The handling of the memory with an actual computer : from such circumstances.
Eight pieces are assumed to be one unit bringing the locker together in 8 pieces and the number is allocated.
On 32 bit computer, the number in 32 bits is allocated.
In a word, the numerical value in eight bits up to about the 0th-4.2 billion th can be treated.

It returns to contents.


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