Posts tagged ‘area codes’
Phone Area Codes Based on Dialing Speed
By Chad Upton | Editor
Telephones have been around in some capacity since the mid to late 19th century, depending on who you credit with the invention.
Early dialing was accomplished by inserting your finger in the rotary disk adjacent to the number you wanted and rotating the dial to the stopping point, then you would remove your finger and the dial would rotate back to its default position. Each number it passed on its way back would induce a pulse — a short variance in current — on the phone line. This pulse communicated the number to the phone system. (more…)
Broken Secrets 