#Unitra

Unitra K-765, or Commodore in Polish guise

During the communist era, pocket calculators were produced by two companies – Wroclaw’s Elwro and Bydgoszcz’s Unitra Eltra. We will take a look at the constructions made in Upper Silesia at another time, today’s hero will be a somewhat strange and already forgotten construction from the Brda River.

PRIVILEG Modell 802 – Calculator from the former West Germany
During the communist era, the dream of many people was to own electronic equipment from the West. Acquiring the coveted computer equipment was downright impossible, but equipment such as calculators and audio systems were somehow obtainable. Today we will take a closer look at one such design. The Privileg Modell 802, as it is referred …
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In search of the perfect electric voltage
When taking DC voltage measurements with a multimeter, we usually don’t think about its accuracy. Receiving a result of 5.1V, when we expect something in the neighborhood of 5V, we assume that the multimeter’s indication is correct, telling ourselves that simply at the output of the power supply or the USB port of the computer …
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The arcana of technology, or what do Qualcomm Snapdragon X and Apple have in common?
One of the more interesting developments in the world of technology is the recent launch of a new series of ARM processors created by Qualcomm. We are, of course, talking about the Snapdragon X Elite and Snapdragon X Plus chips, which are designed to run in Windows laptops. This is not the first attempt to combine Windows and ARM architecture CPUs, but it is the first one that, in my opinion, can succeed. However, in order for me to sufficiently explain the full background of this story, we need to go back to 2007.
Электроника МКУ-1 – Soviet school calculator
The story of our today's hero begins in 1987. It is then that the electronic equipment factory in Svetlovodsk (today's Ukraine) leaves the first calculator Электроника МКУ-1 (Elektronika MKU-1). The device was the result of an idea by officials of the Central Planning Bureau and was designed with a specific purpose in mind - the equipment was to serve high school and college students of the Soviet Union. It would enable them to solve even complex mathematical equations much more quickly and simply.
What’s hidden inside a smart socket?
In today's world, the importance of various types of devices from the "smart home" category is growing day by day. There is nothing surprising in this, after all, thanks to these, sometimes very simple equipment, we can remotely control home lighting, heating or ventilation. Besides, thanks to all kinds of sensors, reading temperature, humidity and light intensity has become much simpler. The data collected by the system can be used to intelligently manage actuators such as relays. In other words, today's technology allows us to build really complex structures at a low cost, which we can call a smart home.