Apple I was the first device that was sought after by private customers. Equipped with a processor clocked at 1-2 MHz, 4 kB RAM and 1 kB vRAM (it allowed to generate a text mode with 40 columns for 24 lines). It was extremely successful and popular in many homes. Interest in the computer turned out to be so great that the production of 200 pieces was simply not enough, an additional production line was launched. In a short time, the successor appeared, the Apple II, which was equipped with a faster CPU with the possibility of expanding memory to 48 kB.