Blog
The need to do calculations throughout history: from the first calculators to the birth of computing
The origins of computing can be found in a recurring need that people had in different contexts: the need to do calculations as precisely as possible. Calculations are present in our daily life and are necessary for many things: commerce, accounting for private companies, collecting taxes, statistics in the research field, drawing buildings plans, etc. The world would not function in the same way without mathematics and humans have always been looking for new ways to optimize calculation processes to respond to this need.
2022 Halloween Contest
The season for pumpkins and ghosts has arrived. As every year, the arrival of autumn means that at Codelearn we are once again organizing the Halloween Contest and our online platform will be transformed into a spooky place where scary characters and stories will be the protagonists for a few days. From October 21 to 28, students will be able to access a special section of the platform where they will be able to show us all their creativity and ─who knows─ maybe even manage to scare us.
Linux, an open source operating system
Microsoft Windows, macOS and Linux are the three most popular operating systems, but the main difference between the first two and the last one is that the first two are owned by two large companies and we always have to buy a license to install them, while in the case of Linux most distributions do not require the purchase of any license because the code of Linux can be used, copied, modified and distributed freely, as long as it is done under the GNU GPL license (GNU General Public License).
Best free software for students (2022)
Free software is that which respects four essential freedoms for users, according to the definition of the term published by the Free Software Foundation and written by Richard Stallman, one of its founders: the freedom to run the program for any purpose, the freedom to study this program and adapt it to the user’s needs, the freedom to redistribute copies and the freedom to modify this software and redistribute modified copies so that everybody can benefit from these changes.
What is the binary system?
The binary system, which is popularly known because it is the numbering system used by computers and other electronic devices, is a base 2 system. This means that it uses only two digits to represent all its numbers and in the case of the binary code these two numbers are 0 and 1. Computers use the binary system because they only work with two voltage levels: OFF or without the presence of an electrical charge (0) and ON or with the presence of an electrical charge (1).