#Display

The display that turned out to be more

Leave a Comment / Microelectronics / By Rafal

Browsing popular auction sites, I once came across an offer for a display similar to those manufactured in the 1970s and 1980s. It was described as our indigenous CEMI design, although the “NN” logo, denoting National Semiconductor, was visible on the board. Of course, this type of design was produced in communist Poland, although not on a large scale, it is much more common to find displays from Czechoslovakia, where production volumes were larger. So, I think one can forgive the seller’s marketing gaffe of labeling the element as a CEMI production, although this is also some misrepresentation. Nevertheless, the price of the item was quite low, so I decided to order it, and in this article I will tell you about its construction and the adventures of trying to get it to work.

HPDL-1414 display operation

Leave a Comment / Arduino / By Rafal

There are a great many different kinds of displays on the market – LCD, LED, OLED, etc. We encounter most of them on a daily basis, but there are also some more classic designs, such as the HPDL-1414.

7-segment display VHDL

Leave a Comment / FPGA / By Rafal

graphical interface. LEDs, displays, screens… there are really many ways to graphically show the progress of the program or task being performed. However, in order to display all the information correctly, you need to properly handle the chosen display. In this article you will learn how to run a 7-segment display on an FPGA chip.

CWD351 – Digital LED indicator from the communist era

1 Comment / Retro / By Rafal

Since its inception, all digital machines were meant to serve man and help him perform his daily tasks in the office, on the factory floor or at home. However, in order for a machine to be useful, something was needed so that humans could understand it. Nowadays, it is quite normal to have all kinds of screens on which digital systems display information that we can understand, but this was not always the case.

Intel’s forgotten registry
What was the name of the first personal computer? The answer to this question depends on the answerer. According to the Computer History Museum located in Silicon Valley, it was the Kenbak-1.
STM32 Ethernet – the first launch
Recently I had the opportunity to work on some project using STM32 microcontroller and Ethernet interface. Probably like other people undertaking this topic, I encountered a problem - the lack of “simple” tutorials. In most of the available sources, connecting the Ethernet interface and STM32 chips is described quite confusingly, and in my opinion, there is a lack of instructions describing how to configure this functionality in the simplest possible way, without unnecessary exploration of network aspects. That's why I decided to prepare this and related materials covering the topic of Ethernet on STM32. As a first step, I will show you how to perform the initial configuration so that the microcontroller is visible on the network.
The display that turned out to be more
Browsing popular auction sites, I once came across an offer for a display similar to those manufactured in the 1970s and 1980s. It was described as our indigenous CEMI design, although the “NN” logo, denoting National Semiconductor, was visible on the board. Of course, this type of design was produced in communist Poland, although not on a large scale, it is much more common to find displays from Czechoslovakia, where production volumes were larger. So, I think one can forgive the seller's marketing gaffe of labeling the element as a CEMI production, although this is also some misrepresentation. Nevertheless, the price of the item was quite low, so I decided to order it, and in this article I will tell you about its construction and the adventures of trying to get it to work.
DCE Q816 – first processor in FPGA
My first FPGA soft processor project.
A forgotten type of integrated circuits
Inside one of my retro treats, the Soviet calculator Электроника МК-52, about which I have already prepared an article“Электроника МК-52 - Soviet calculator in orbit”, as well as in some respects its twin design Электроника МК-61, one can find rather mysterious-looking integrated circuits.