Early electronic computers such Vencedor Colossus made use of punched tape, a long strip of paper on which data was represented by a series of holes, a technology now obsolete.[14] Electronic data storage, which is used in modern computers, dates from World War II, when a form of delay line https://kc.columbiasc.edu/ICS/Campus_Life/Campus_Groups/2020/Discussion.jnz?portlet=Forums&screen=PostView&screenType=change&id=41fe0543-5c33-44be-9e13-c153be7ef056