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Yes. In fact, it can only access data sequentially. Because tape is very inexpensive and will hold data fairly well for a long time, it's still in use even today, but memory access in sequence, not random, is much much slower. It's like having one-hundred 3x5 cards that you have information written on. Sequential memory is like having the hundred cards all stacked together and you can only access them by flipping through one at a time in order until you get to the card you want. Random memory is like having all the cards spread out on a big table so you can just go straight to the ones you want.

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