Skip to main content

The HP41C as a prototype for an IoT device

When my brother André Bartels went to university at Maties, he arrived back with an HP41C calculator. It was programmable and I was hooked. In my first year at university I also bough myself one, a 41CV. The best thing about the calculator was its programming language called FOCAL. It allowed the creation of some decent apps. The one I recall the best was a fuel management programme that was similar to the fuel stats now displayed by the digital dashboards on most modern cars. In those days I had a Toyota Corolla and would drive long distances between Stellenbosch in the Western Cape and Howick in Kwazulu-Natal. I would have all my fuel statistics on the HP41CV.

Read the article over at LinkedIn here.


Popular posts from this blog

easywall - Web interface for easy use of the IPTables firewall on Linux systems written in Python3.

Firewalls are becoming increasingly important in today’s world. Hackers and automated scripts are constantly trying to invade your system and use it for Bitcoin mining, botnets or other things. To prevent these attacks, you can use a firewall on your system. IPTables is the strongest firewall in Linux because it can filter packets in the kernel before they reach the application. Using IPTables is not very easy for Linux beginners. We have created easywall - the simple IPTables web interface . The focus of the software is on easy installation and use. Access this neat software over on github: easywall

Should You Buy A UniFi Dream Machine, USG, USG Pro, or Dream Machine Pro?


No Scrubs: The Architecture That Made Unmetered Mitigation Possible

When building a DDoS mitigation service it’s incredibly tempting to think that the solution is scrubbing centers or scrubbing servers. I, too, thought that was a good idea in the beginning, but experience has shown that there are serious pitfalls to this approach. Read the post of at Cloudflare's blog: N o Scrubs: The Architecture That Made Unmetered Mitigation Possible