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If your equipment stops frequently and behaves abnormally, suspect the power source. Many users assume their power source is clean and stable, but reality is often different. A power source can be a mixture of noise and surges, and if they are not filtered out, the equipment powered by the power source wil be at risk. There are devices on the market to prevent this, so there is no reason not to utilize them. A noise filter is a device that effectlively removes noise from a power source. A surge …

Touch Screen GUIs (Graphic user interfaces) are becoming more ubiquitous than ever. For mass production, MCUs (micrcontrollers) must be used to keep costs down, but it can take a lot of effort to interface an MCU with a graphical LCD. Displaying text requires first creating fonts.  TrueType fonts can be used, but they require additional effort and hardware resources, so typically bitmap fonts are used. To make an attractive user interface also requires support for images (e.g. .jpg or .pn …