The development of the personal computer revolutionized nearly every industry, and book publishing is no exception. Until the late 1980s, professional printing was done on large presses using printing plates. Pre-press work required printing plates for each spread within a book, which were then used for offset print runs. With the advent of desktop publishing and digital printing, pre-press work is now completed with digital assets. As printers are now capable of working from digital files prepared by Legaia Books, the amount of time spent preparing each book for online printing is drastically reduced compared to offset printing.