aviation industry
Can I start programming in 5 minutes? Is quite real
The topic of programming lessons has been raised more than once, but many of these materials are either too complicated for beginners or require additional preparation and installation of various (often expensive and time-consuming) software packages. Is it possible to do without all this? Can!
We will try to get by with a minimum of additional information, so that in 5 minutes our first program will work. So let’s get started. Introduction According to the encyclopedia, a computer program is a sequence of instructions for a computer. A programming language is a formalized way of writing computer programs. It is important to note that the computer itself does not need a “human” language; it copes well with machine codes in binary format. These codes are simple instructions like: “Take the number at address 100, add the number at address 101, put the result in cell 102”. Continue reading
From Windows to Linux?
I have been repairing and maintaining computers for over 20 years. Started work at MSDOS. Then Windows 3.1; Windows 95, 98; Windows 2000 Finally, Windows XP. And today – Windows 7 and 8.
These operating systems were far from always satisfactory. Firstly – paid and not cheap. Secondly, applications are also mostly paid. The third point is unstable operation, crashes, glitches and, in connection with this, loss of information. Windows is susceptible to viruses. It is necessary to equip the computer with anti-virus applications. At the same time, there is another operating system – Linux, which practically does not have these shortcomings. And most importantly – it’s free. Yes, and almost all software is also free. At the initial stage of development, Linux was difficult for the average user, since Continue reading
What is the Morris Worm?
In early November 1988, the first ever network attack on computers connected to the global network took place. Her culprit was Cornell University graduate student Robert Tappan Morris.
The program, written by Robert Morris, had a small dictionary of the most well-known passwords, which provided it with penetration of 10 percent of computers connected to ARPANET. Once on a foreign computer, the program first checked whether the same program was already installed here. If the computer was still “clean”, the program masked its presence in the system, read a file that contained information about users of the “occupied” system, forwarded this information to the author, and then Continue reading
