The history of character codes illustrates the evolving need for machine-mediated character-based symbolic information over a distance, using once-novel electrical means. The earliest codes were based upon manual and hand-written encoding and cyphering systems, such as Bacon's cipher, Braille, International maritime signal flags, and the 4-digit encoding of Chinese characters for a Chinese telegraph code (Hans Schjellerup, 1869). With the adoption of electrical and electro-mechanical techniques these earliest codes were adapted to the new capabilities and limitations of the early machines. The earliest well-known electrically-transmitted character code, Morse code, introduced in the 1840s, used a system of four "symbols" (short signal, long signal, short space, long space) to generate codes of variable length. Though most commercial use of Morse code was via machinery, it was also used as a manual code, generatable by hand on a telegraph key and decipherable by ear, and persists in amateur radio use. Most codes are of fixed per-character length or variable-length sequences of fixed-length codes (e. g. Unicode).
I think that travelling is one of the most ancient occupations of people. In ancient time travelling was slow, tiring and even dangerous at times. Nowadays it is a miracle of speed and comfort. It goes without saying that horse carriages and steamboats of the past can’t be compared to our modern fast trains and ocean-liners, to say nothing of planes. But still there is something which unites modern and ancient travellers - it’s the spirit of adventure in their souls, the desire to see and expierence everything themselves.
No one can choose between various means of transportation. Travelling by air is surely the fastest and the most convenient way of travelling.
Travelling by sea or river is really cool if you are not seasick. Modern sea-liners look like real floating cities with all modern conveniences and a wide choice of sport and entertainment facilities. Travelling by train affords a great comfort for the people. They needn’t trouble about foodstuffs as there’s usually a dining- car in each train.
If you are a great lover of nature, there’s nothing for you like travelling on foot. You can’t but observe many interesting things and admire the beautiful landscape around.
I think that at present I prefer to travel by fast trains with dining cars. I love making myself comfortable in the compartment, getting acquainted with people, watching landscapes and cities fly by. I enjoy the noise of the wheels which always brings me sweet dreams. I travelled a lot by train and visited: Moscow, Petersbug, Odessa. I was greatly impressed by my trips.
I hope that I’ll have more opportunities to travel in future. I’m looking forward to it with great pleasure.