What are the advantages and disadvantages of a daisy wheel printer? What are the characteristics of a laser printer? 11. What is the use of plotters? Defi ne a plotter. Explain at least two types of plotters. What are the advantages and disadvantages of a CRT monitor? Which is a better monitor—a CRT or a TFT? State the reasons as well.
The Correct Answer and Explanation is :
Advantages and Disadvantages of a Daisy Wheel Printer:
Advantages:
- High-quality text output: Daisy wheel printers produce high-quality, letter-quality text, making them ideal for printing documents like letters and invoices.
- Cost-effective: Compared to inkjet or laser printers, daisy wheel printers tend to be less expensive.
- Durability: These printers are durable and can handle long continuous print jobs.
Disadvantages:
- Slow printing speed: Daisy wheel printers are relatively slow, especially when compared to modern printers.
- Limited versatility: They can only print one typeface and are not suitable for color printing or graphics.
- Noise: Daisy wheel printers can be noisy during operation.
Characteristics of a Laser Printer:
- Laser Technology: Laser printers use a laser beam to transfer toner onto paper, creating sharp, clear text and graphics.
- High-Speed Printing: These printers are known for fast printing speeds, making them ideal for office use.
- High-Quality Output: Laser printers produce high-resolution prints, ensuring crisp and precise output.
- Cost-Effective for High Volumes: Though expensive initially, they are cost-effective for large print volumes due to low per-page costs.
Use of Plotters:
A plotter is a specialized printer used to produce high-quality graphical prints such as blueprints, charts, engineering drawings, and maps. Unlike regular printers, plotters can print continuous lines, making them ideal for large-scale diagrams.
Types of Plotters:
- Inkjet Plotters: These use liquid ink sprayed onto paper, capable of producing high-resolution images and a wide range of colors. They are useful for detailed, colorful drawings.
- Pen Plotters: These use a set of pens to draw lines on paper. They are slower but offer high precision, particularly for architectural drawings.
Advantages and Disadvantages of CRT Monitors:
Advantages:
- Good color accuracy: CRT monitors provide accurate and vibrant colors.
- Wide viewing angles: The image remains consistent from various angles.
Disadvantages:
- Bulkiness: CRT monitors are large and heavy, requiring more space.
- Higher power consumption: They consume more energy than newer technologies like TFT.
- Screen Flickering: Older CRT monitors can cause screen flickering, leading to eye strain.
CRT vs. TFT Monitors:
- TFT (Thin Film Transistor) Monitors are generally considered better due to their slim design, energy efficiency, and sharp image quality.
- Reasons:
- Slim Design: TFT monitors are lightweight and space-efficient, unlike bulky CRTs.
- Energy Efficiency: TFT monitors consume significantly less power than CRTs.
- Image Quality: TFT monitors provide better contrast, brightness, and no flickering, reducing eye strain.
Overall, TFT monitors are preferred over CRT monitors due to their advanced features and superior performance.