Before the machine can solve any problem, the "programmer" must feed her the information or "data" and precise instructions, how the information should be processed methodically. The "input" is done by punch cards, perforated paper[graze or by magnetic tape or paper with magnetized imprint. The data is entered into the memory by electrical impulses, the computer's "quick memory"., transfer. The memory gives the tasks to an arithmetic unit and from there takes intermediate results again. (All information is saved, until they are no longer needed, similar to a tape, which can be listened to any number of times, as long as you don't turn off the sound.) After the arithmetic unit has solved all parts of the task, there is the answer in computer language to the issuing work. Depending on the nature of the task, the answer may be a numerical result or a report, that of a special device, the high-speed printer, translated into understandable language; but the answer may also be there, that only one lamp lights up as a result of a difficult decision, what says: And, all conditions are met!
The computer's "quick memory".; a plate (or a ribbon), where all information is stored.
Electrical supply