When trees were large, and memory sizes were small: about ferrite memory
Holidays are over. For these holidays, I managed to live for 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 in absolutely childish delight. On the way back, I thought about the eternal. When I got home, I, of course, immediately forgot about all these reflections. The memory is girlish.
And here it is - the day off, favorite music in the ears. And I remembered! I remembered what I wanted to tell. I wanted to tell you about the memory!
Do you know what the memory size of 512 bytes looked like?
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Like this. This is a ferrite matrix.
She worked as follows:
Each ring is a bit. Through the ring passed three wires. Current is always supplied “from the top” and “from the side”. If the direction of the current coincides with the magnetizability, nothing changes. If it does not match, it reverses. The third wire is the prohibition of magnetization reversal. If current is applied to it, it compensates for one of the wires, and nothing happens. The cell does not reversal. The cells are polled all at once.
On the edge.
It was this kind of memory that was once inserted into computers. At the time of "big trees" and the size of these computers with a room. To display the size next to the memory is a matchbox.
This memory has a story. Of course, I do not know her completely. But I can tell that little part of this story that concerns me personally. Ie, how this memory came to me.
N years ago I went to college, and met one of the teachers. Right on the entrance exams. I do not know why and why, but he decided to give me a present. Give me a "memory for memory, hehe." And, as it should be, I completely forgot about her and about the teacher. Especially because she was finishing 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, oddly enough, I did not find a single hole in it.
And I'm still wondering what was once written on it. What do I remember? .. Sorry, you can not see. Or is it somehow possible?
And here it is - the day off, favorite music in the ears. And I remembered! I remembered what I wanted to tell. I wanted to tell you about the memory!
Do you know what the memory size of 512 bytes looked like?
')
Like this. This is a ferrite matrix.
She worked as follows:
Each ring is a bit. Through the ring passed three wires. Current is always supplied “from the top” and “from the side”. If the direction of the current coincides with the magnetizability, nothing changes. If it does not match, it reverses. The third wire is the prohibition of magnetization reversal. If current is applied to it, it compensates for one of the wires, and nothing happens. The cell does not reversal. The cells are polled all at once.
On the edge.
It was this kind of memory that was once inserted into computers. At the time of "big trees" and the size of these computers with a room. To display the size next to the memory is a matchbox.
This memory has a story. Of course, I do not know her completely. But I can tell that little part of this story that concerns me personally. Ie, how this memory came to me.
N years ago I went to college, and met one of the teachers. Right on the entrance exams. I do not know why and why, but he decided to give me a present. Give me a "memory for memory, hehe." And, as it should be, I completely forgot about her and about the teacher. Especially because she was finishing 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, oddly enough, I did not find a single hole in it.
And I'm still wondering what was once written on it. What do I remember? .. Sorry, you can not see. Or is it somehow possible?
Source: https://habr.com/ru/post/94304/
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