Lets take a look back in time to see how the computer has evolved.
In many ways, man has been using computers for millennia: an abacus is, after all, simply a very basic form of computer. The first mechanical calculator (the calculating clock) was built in the 17th century. Programming with punch-cards has been around for about 200 years now.
It was in the 1940s, however, that the first electronic, digital computers started to appear that is, computers as we know them today. These computers were massive machines, filling a large room (in some cases, a whole building) and yet having less computing power than a simple calculator does today. Reprogramming them often required extensive amounts of physical rewiring, as the only way the computer knew what to do was by how it was connected together. Still, these computers were helpful in the war effort most famously, the British code-breaking computers at Bletchley Park that broke the Germans code is widely thought to have shortened the war by years.
Fast forward to the 60s. This was when wires and tubes were replaced with the transistor an overnight leap forward in technology that reduced computers size to an...
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