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Find the right combination

The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.

Correct answers: 29

The first user who solved this task is Nasrin 24 T.

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The Old Nephew

My 7 year-old nephew showed me with pride the "telephone" he had just made from a string and two tin cans.
I pulled out my iPhone and said, "That's nice, but... look at the phones that kids your age are making in China!"

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Computer mouse

In 1970, a U.S. patent was issued for the computer mouse - an “X-Y Position Indicator for a Display System” (No. 3541541). The inventor was Doug Engelbart. In the lab, he and his colleagues had called it a “mouse,”after its tail-like cable. The first mouse was a simple hollowed-out wooden block, with a single push button on top. Engelbart had designed this as a tool to select text, move it around, and otherwise manipulate it. It was a key element of his larger project - the NLS (oN Line System), a computer he and some colleagues at the Stanford Research Institute had built. The NLS also allowed two or more users to work on the same document from different workstations. It had been given a public demonstration at a computer conference on 9 Dec 1968.

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