Recently I told my readers how among a heap of rubbish I found a miracle of Soviet engineering, a mechanical calculator, with a hand drive. Then many people accused me of ignorance. As it is, I do not know what it is. In fact, I really didn't have to work with such an Iron Felix.
So how he had been gathering dust from time immemorial, in the backyard of the summer cottage, decided to lubricate and clean it. Pre-filled it with a liquid key. And left for a day.
Lubricate the dusty gear was rash. Since the dust has adhered to the sticky surface. I had to vacuum first.
Unscrewed six screws over a slotted screwdriver. I was struck by the fact that the holes in the bottom platform do not fit perfectly to the top and have a large gap... Why did they do this? Unclear.
By halving this miracle, I began to understand a little the principle of entering numbers on the drums of the counting mechanism.
But first watch the video of how I performed addition on a brutal calculator in order to have an idea of its work:
When data is entered by moving a certain lever with a designated number, for example 5.
Then pins come out in the inner drum, exactly 3 pieces.
If rotate the handle, then these pins rotate the drum with numbers three times.
AND the information on the dial changes to the number three.
TO does this figure need to add up some other? Then we repeat the operation and the figure will be added and displayed on this board.
If remove the protective covers then our "monster" looks like this.
On this device of the past, bright era, it was possible to carry out such calculations as: Addition, subtraction. Multiplication and division. I say that advanced users could work with fractions and derive the root.
This the technique that I have on hand was heavily worn out (worn out). Therefore, in places it jams. But in fact, this computing unit deserves a LIKE, what do you think? Stop being silent. Write a comment.