Page 17 - Handout Digital Electronics
P. 17
2.3.5 Output Unit
The purpose of this unit is to convert data from machine form into a form suitable for human
understanding, for example from binary data to decimal or text which humans can understand. There is
a range of output devices but most common are:
• Printer
• Visual Display Unit(VDU)
• Plotter
• Computer output on Microfilm(COM)
• Voice Synthesizer and others.
2.3.6 The secondary storage
This unit is known by several names such permanent storage, mass storage, bulky storage and others.
Its purpose is to store data permanently for future use. Examples of secondary storage devices include
among others:
• Magnetic disks
• Magnetic tapes
• Floppy disks
• USB flash disks and others.
Exercise
17
