well if you think of it (kinda funny i was thinking of this a few days go) but back in the day... well before i was born. the refrigerator size hd could store like 1kb-1mb (dont know the exacts but if you think lets take 1 meg.
1m=1,000kb=1,000,000bytes*8=8,000,000bits.
so that refridge size hd could hold 8 million ones and zeros... not that much if you think about it. Now aday
1TB=1,000GB=1,000,000MB=1,000,000,000kb=1,000,000,000,000bites*8=8,000,000,000,000 So today we can hold eight trillion ones and zeros... on something the size of a small book. kinda amazing