The First Computer Ever

What, when, where, and how big was the first ever computer on the planet? The first computers as we know them today were developed somewhere around 1940-1945. But the term computer refers to a calculating device and so it is hard to say when the first computer ever was established. For example, as early as 100BC the abacus, which is a counting frame, can also be called a computer, because it helped to compute certain quantities. All the way up to the middle of the 20th Century, the computers were somehow partly dependent on mechanics. George Stibitz is internationally recognized as a father of the modern digital computer. It is amazing how far the digital technology has come in just half a century. From the first computers in 1940's to virtually everybody in the first and second world owning a computer. This is a huge step and an extremely rapid development. This makes me wonder what will happen in another fifty years or so?