Getting started with Raspberry Pi

1.0 Raspberry Pi

Raspberry Pi 4 Model B

Raspberry Pi is a popular single board computer developed by the Raspberry Pi Foundation in the U.K. Raspberry Pi 4 Model B (Pi4B) was released in June 2019. The main components of Pi4B are:

  • The system-on-chip, (Soc).
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Gtk-WARNING **: cannot open display:

While running a GTK+ based C program under Cygwin, the following runtime error is observed,

Gtk-WARNING **: cannot open display:


  1. Make sure that Cygwin/XServer is installed and is running. If it is not installed, download the relevant packages from Cygwin.
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