Computers nowadays are everywhere, I even can’t imagine my life without them, but if we look long they are available for everyday use – only about 15 years. It’s amazing how fast they have integrated in our lives. At the very beginning there were many different systems called computers, from special scientific workstations to gaming consoles, but the most common type now is IBM PC, I guess because it’s universal. The second popular is MAC, which is also quite universal architecture, only Apple holds patent of that technology and doesn’t allow other hardware manufacturers to produce them.…