Do you have a washing machine at home? How about those antique sewing machines with pedals? They’re big, right? They take up so much space that you want to buy a smaller one.
How about having a computer larger than these two machines combined? Can you handle that?
Before, computers were so large that a line of desks were not enough for it. In fact, a whole room was dedicated for computers alone. These computers were all analogue, processing only commands such as 1 and 0 (binary).
If computers occupied rooms, can you imagine how big hard disks were before? As big as your washing machine or sewing machine. Their capacities were only up to 20MB, but today’s hard disks are different. No matter how small they are, their capacities can reach giga or terabytes!
