Warning: The following action may cause a visitor’s browser or even their computer to crash. This information is provided for educational purposes only. Use it responsibly. I do not encourage or condone the misuse of this knowledge, and I disclaim any responsibility for any damage, disruption, or unintended consequences…
At the university I’m attending, Hellenic Open University, they have developed, years ago, a custom programming language and a custom compiler for it. The language is ok, feels a bit like Pascal and the command’s are all in Greek. For example : ΑΛΓΟΡΙΘΜΟΣ ΔΟΚΙΜΗ ΔΕΔΟΜΕΝΑ x:INTEGER; ΑΡΧΗ ΤΥΠΩΣΕ…
Hamming numbers, or ugly numbers, or smooth numbers, is a sequence of numbers that they can be produced by : 2^x * 3^y * 5^z Where x, y, z >= 0 For example : * 2, is a hamming number, since : 2^1 + 3^0 + 5^0 = 2. * 25, is a hamming…
The pilots of the new Boeing 737-NG, around 2019-2020, encountered a particularly vexing issue: all six display units would go blank during landings at certain airports, including: * La Mina, La Guajira, Colombia * Barrow, Alaska, USA * Pine Bluffs, Wyoming, USA * Wayne County, Ohio, USA * Chippewa County, Michigan, USA * Cavern City, New…
For a computer, a three-dimensional space is a collection of triangles. In older 3D video games, this was noticeable and everything seemed a bit triangular. This was because, in order to accommodate older hardware, they had to reduce the number of triangles. Nowadays, there are more triangles, so there is…
In low-level coding, we usually have to specify the length of a variable. We have many types, including int32 and int64, which represent numbers in binary, using 32 bits or 64 bits, respectively. The int32, of number 4 for example, looks like this: 00000000 00000000 00000000 00000100 That’s it…
In the 1930s, Alonzo Church introduced Lambda calculus. It is a formal system for expressing mathematical logic and computations using functions. Long before computations were performed by machines, they were done by humans, and Lambda calculus helped formalize these processes in written form. Lambda calculus looks like this: λx.x*…
Databases are used every day, and most of your day you are manipulating a database. When you buy from a shop: * The first database to be affected is the shop’s logistics database, where they store the quantity of products they have. * Then, in many countries, like Greece, all purchases…