May 24, 2010 at 11:44When the trees were large and the memory sizes were small: about ferrite memory
Holidays are over. For these holidays, I managed to live almost two weeks on the shore of a mountain cape, in a tent, without the Internet and mobile phones. And at the same time be absolutely childish delight. On my way back, I thought about the eternal. When I got home, of course, I immediately forgot about all these thoughts. The memory is girlish.
And here it is - a day off, in the ears, favorite music. And I remembered! I remembered what I wanted to tell. I wanted to tell you about memory!
Do you know how the 512-byte memory used to look ?
Like this. This is a ferrite matrix.
She worked as follows:
Each ring is a bit. Three wires passed through the ring. The current is always supplied “from above” and “from the side”. If the current direction coincides with the magnetization, nothing changes. If it does not match, it is remagnetized. The third wire is the prohibition of magnetization reversal. If a current is supplied to it, it will compensate one of the wires, and nothing happens. The cell is not remagnetized. Cells are polled all at once.
On the edge.
It was precisely such a memory that was once inserted into computers. In times of "big trees" and the size of these computers with a room. A matchbox is located next to the memory to display the dimensions.
This memory has a story. Of course, I do not know her completely. But I can tell that small part of this story that concerns me personally. That is, how this memory came to me.
N years ago I entered the institute, and met one of the teachers. Right at the entrance exams. I don’t know why and why, but he decided to give me a present. Give me a "memory for memory, hehe." And I, as expected, completely forgot about her and the teacher. Moreover, she graduated from a completely different university. And then I remembered.
True, I thought that according to all the canons of the genre, this memory should be with a hole. Once became a girl. But, strangely enough, I did not find a single hole in it.
And I’m still wondering what was once recorded on it. What do I remember? .. Sorry, you can’t see. Or is it somehow possible?
And here it is - a day off, in the ears, favorite music. And I remembered! I remembered what I wanted to tell. I wanted to tell you about memory!
Do you know how the 512-byte memory used to look ?
Like this. This is a ferrite matrix.
She worked as follows:
Each ring is a bit. Three wires passed through the ring. The current is always supplied “from above” and “from the side”. If the current direction coincides with the magnetization, nothing changes. If it does not match, it is remagnetized. The third wire is the prohibition of magnetization reversal. If a current is supplied to it, it will compensate one of the wires, and nothing happens. The cell is not remagnetized. Cells are polled all at once.
On the edge.
It was precisely such a memory that was once inserted into computers. In times of "big trees" and the size of these computers with a room. A matchbox is located next to the memory to display the dimensions.
This memory has a story. Of course, I do not know her completely. But I can tell that small part of this story that concerns me personally. That is, how this memory came to me.
N years ago I entered the institute, and met one of the teachers. Right at the entrance exams. I don’t know why and why, but he decided to give me a present. Give me a "memory for memory, hehe." And I, as expected, completely forgot about her and the teacher. Moreover, she graduated from a completely different university. And then I remembered.
True, I thought that according to all the canons of the genre, this memory should be with a hole. Once became a girl. But, strangely enough, I did not find a single hole in it.
And I’m still wondering what was once recorded on it. What do I remember? .. Sorry, you can’t see. Or is it somehow possible?