Now, almost everywhere applied electronic machines and appliances, the programme of work which is carried out by using perforated paper tapes and cards. Therefore, it is easy from already used punch cards to pick up where the holes were located in one row. Essentially, this is a ready device for drawing dashes: apply to the centers of the holes, a ruler and a pencil or pen — under the card will remain clear dotted line.
Recommend to read
TILLERS FOR ANY SOIL
Based on its first walk-behind tractor I took the "Vyatichi", technical description, sketches, key components and parts of which were published in the journal "modelist-Konstruktor"....
IMPROVEMENT HAND TOOLS IMPACT
When conducting different kinds of work often have to use hand tool percussion: chisel, punch, jumper and others. To eliminate the negative impact response of the impact on a hard work...
