The unit will monitor, as well as receive data (Input) and display information (Output), which shows both the letter and the pictures come from the receiver circuit Video Graphic Array (VGA Card)
The unit monitors the data (Input) and data (Output), which displays both text and images. The signal from the motherboard Video Graphic Array (VGA Card).
The monitor will be the receiving unit (Input) and the display unit information (Output), which shows both letters and pictures will receive a signal from the circuit board. Video Graphic Array (VGA Card).