The output unit is a device where results of the program are obtained. The commonly used output devices are : (VDU) or Monitor and printers, Speakers etc.
It is one of the primary computer output device. They are very much like T.V. screens. The CRT monitor accommodate 80 character 25 rows. The information is flashed on the screen. It is also called VDU (Visual Display Unit). Now a days we are using LCD and LED monitors.
It is used to prepare permanent copies of your document. They are classified by how they print and how first they operate.
SPEAKER : In this output device we can hear the audio of mp3 and video etc. which is play through the computer.