The programmer has 3 operating modes, the modes are switched by a short push of a button and switched in a circle. You can tell which mode is currently selected by the blinking of the LED (1, 2 and 3, ...

Editor's note: This article originally appeared in the Aug. 2020 ABRN and was updated Jan. 2025. I, at times, envy someone just entering our field. Whether they know it or not, it may be beneficial to ...

Among the changes made by Apple to its laptops over the years, the transition from a Hall sensor-based sleep sensor to an angle sensor that determines when the lid is closed is a decidedly unpopular ...