An output device is a hardware component that helps a computer share information. When this information is printed on paper, it is called a hard copy.
Definition of Hard Copy Output Device
A hard copy output device is a device that takes data from a computer and turns it into a physical format. This format could be text, images, or designs on paper or other materials. These devices are essential when you need to store information offline or share it in printed form.
For example, when you print your school notes or a project report, you use a printer, which is a common hard copy output device.
Hard Copy Output Devices Examples
The following are examples of hard copy output devices:
1. Printers
Printers are the most popular hard-copy output devices. They print text, images, and other digital files on paper.
- Inkjet Printers: These printers spray tiny droplets of ink onto paper. They are great for printing high-quality photos, colourful designs, and documents. Inkjet printers are slower than laser printers but ideal for detailed prints.
- Laser Printers: These printers use laser beams to produce sharp text and clear images. They are much faster than inkjet printers and are suitable for printing many documents quickly. Laser printers are often used in offices.
- Dot Matrix Printers: These printers use small pins to strike an ink ribbon onto paper. They are mostly used for printing receipts, bills, and other continuous forms.
2. Plotters
Plotters are special devices used to print large and precise drawings. Architects, engineers, and designers widely use them.
- Plotters can handle very large sheets of paper.
- They are perfect for printing blueprints, maps, and technical diagrams.
- Unlike printers, plotters can draw continuous lines, making them more accurate for detailed designs.
3. Photocopiers
Photocopiers make duplicate copies of documents. They are useful in schools for making copies of study material.
- They scan the original document and print a copy instantly.
- Modern photocopiers also offer features like resizing and colour printing.
4. 3D Printers
3D printers are advanced output devices. They create three-dimensional objects from digital models.
- These printers use materials like plastic, resin, or metal instead of paper.
- Designers and engineers use 3D printers to create prototypes of machines, tools, and products.
- Students in schools can use 3D printers to build models for science or art projects.
5. Fax Machines
Fax machines print documents sent through telephone lines. Although not as common today, they are still used in some businesses. They help send and receive hard copies of documents over long distances.
Working Mechanism of Hard Copy Output Devices
Hard copy output devices work in a simple step-by-step process:
- The computer sends digital data (text or images) to the device.
- The device processes this data.
- The output is printed onto paper or another physical medium.
For example, in a printer, the computer sends text or images to the printer. The printer uses ink or toner to create the text or images on paper.
Advantages of Hard Copy Output Devices
- Durable Output: Hard copies last a long time if stored properly.
- Portable Information: Printed documents can be carried anywhere.
- Useful for Education: Students use hard copies for notes, assignments, and exam preparation.
- Professional Appearance: Printed materials look formal and are useful for presentations and meetings.
Disadvantages of Hard Copy Output Devices
- Costly Maintenance: Ink, toner, and paper can be expensive.
- Environmental Concerns: Excessive use of paper contributes to deforestation.
- Slow Speed: Some hard copy devices, like dot matrix printers, are slow.
- Limited Flexibility: Hard copies cannot be easily changed once printed.
