Xlg Information 00
There is a great set of pages from The World of Science, published by Golden Books in 1954 over on Modern Mechanix. Th is fellow is soldering up a giant computer.

In the sound studio a singer is performing a popular number. The microphone suspended from overhead wires picks up the sound. If a whole group of musicians were being used, more microphones would be spaced about. In the control room at the back stands the sound engineer listening through earphones and turning dials on the crowded panels before him.

Soon, as a result of this recording session, tens or hundreds of thousands of people will be able to flick on a phonograph and, wherever they are, hear this same singer with her guitar performing this same popular tune, as often as the hearer chooses to repeat it.

Let us look at the steps between.

Modern Mechanix » INFORMATION: TO SEND AND USE IT – Link.

TheJof notes that this is actually an older type of telephone switch called a crossbar. Although it is an electromechanical computer of sorts, it’s more of a telephone switch first – Thanks!