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
GRUMMAN F6F3 HELLCAT
This plane can rightly be called the most successful American fighter of the Second world war. Experts from the U.S. Navy estimated that 75 percent of all air victories of the naval...
FROM THE “UNDERWATER FROG” TO THE SUBMARINES-“DINOSAURS”
As we have seen, the "underwater thing" in France during the time of Napoleon special did not develop, despite quite a rich flow of suggestions, starting with Robert Fulton. However,...
