A contraction stress test is a test performed during pregnancy to verify whether or not the unborn babyâs heart is strong enough to withstand labor. It uses drugs or nipple stimulation to make the uterus temporarily contract in order to replicate labor contractions.
Graphical user interface. A graphical user interface (or GUI, often pronounced gooey), is a particular case of user interface for interacting with a computer which employs graphical images and widgets in addition to text to represent the information and actions available to the user.
The primary API for programming graphics since the early days of Windows has been the Graphical Device Interface (GDI). This API was designed to handle numerous 2D output devices, and it formed the basis for the Windows user interface experience.