May 2025
Two more old (but very useful) Windows programs have been made available under Downloads → Windows Oldies.
These programs are only available in German.
September 2025
LoCAD version 8.0 has been released for iPadOS and macOS.
In iPadOS, an option to specify a number of cycles that are executed as a cycle sequence using the continuous cycle button and an option to adjust the cycle frequency have been added in operating mode.
If the number 0 is entered, normal continuous clock mode is activated.
In macOS, it is now also possible to use the frequency setting for normal clocks.
January 2024
Card2Memory version 5.0 has been released.
Previously, only CSV files with the CR (Carriage Return) line break common in macOS up to version 9 could be used for data import.
In this version, CSV files can now also be used in which line breaks with CR+LF (Carriage Return + Line Feed, as they occur during CSV export from Excel) or the pure LF common under Unix/Linux and newer macOS versions are present.
November 2023
LoCAD version 7.4 has been released for iPadOS and macOS, in which a diode has been added to the basic elements and an LED matrix and an enlarged seven-segment display with integrated decoder have been added to the block elements.
August 2023
LoCAD version 7.0 has been released for iPadOS and macOS.
In response to several requests, the position options for the basic elements have been added so that the outputs can now also be directed to the left and upwards.
The desired position can be selected using the arrows in the second row.
When creating ICs, input lines without a connection to a component that are a maximum of 3 grid units long are not drawn as a connection at the edge of the IC, but are entered as a gap in the row of connections.
March 2023
Card2Memory version 4.0 has been released.
This version contains stability improvements and can also be run on macOS by using Mac Catalyst with restrictions on card creation.
The restrictions relate to the handwriting and photo recording function, which are only available in the iOS/iPadOS version.
February 2023
LoCAD version 6.0 has been released for iPadOS and macOS.
In the iOS version, due to the problem that sometimes occurs with the text display when rotating in portrait orientation, the rotation function has been omitted from this version onwards and the ‘Book’ button has been added instead.
This can be used to display the text selected under ‘Settings’.
By using Mac Catalyst, this iPad app can now also be run on a Mac. However, this reduces the signal speed.
The macOS version contains some minor improvements.
February 2021
LoCAD version 5.0 has been released for iPadOS and macOS.
In the iPadOS version, the problem with access rights caused by the change in the download procedure from iOS 13 has been fixed.
In the macOS version, the current position and size of the workspace are saved at the end of the program and further stability improvements are included.
August 2020
Card2Memory version 3.0 has been released. This version greatly simplifies the creation of flashcards for learning vocabulary.
With a high-contrast black and white photo of a two-column vocabulary list, the corresponding flashcards can be created automatically via text recognition.
Before using cards created in this way, however, they should be checked for correct recognition.
June 2020
The book
Building a microcomputer – From basic circuits to a programmable computer
was published and is available in the Book Store.
LoCAD-Version 4.0 has been released for iPadOS and macOS, which includes an improvement in IC production and a change in the switching algorithm to speed up switching processes.
With Card2Memory version 2.0, it is now also possible to create new cards and edit them in landscape format. Furthermore, the pen can now be used in four colors.
May 2020
For iPadOS and macOS, all circuit examples from the book
Building a microcomputer – From basic circuits to a programmable computer
have been made available for download.
February 2019
While cleaning up, I found some older Windows programs that could still be useful.
The first one on computed tomography is available for free under Downloads → Windows Oldies.
LoCAD-Version 3.0 has been released for iPadOS and macOS, which contains minor bug fixes and stability improvements.
November 2018
For iOS and macOS, all circuit examples from the book
Learning with LoCAD – How computers work
Introduction to basic principles of computer hardware
have been made available for download.
September 2017
LoCAD for iPad and Twist.It
A problem regarding the language setting in iOS 9 has been fixed.
Card2Memory
The flashcard file has been available in the App Store since mid-January.
Since February 13, a card index with basic knowledge of analytical geometry for basic courses (in German) can be downloaded free of charge from the download area.
LoCAD for Mac
The version for macOS has been available to download from the App Store since May 17.
In the free version, 9 components can be used per circuit