NEB Class 11 Computer Science | Important Differences between all chapters.

In this video you can find the important differences between of all the chapters.

List of differences between:
- Differences between System and Application software.
- Differences between GUI and CLI
- Differences between Primary and Secondary memory
- Differences between RAM and ROM
- Differences between Compiler and Interpreter
- Differences between while and do – while loop
- Differences between Private and Public key encryption.
- Differences between Impact and Non - impact Printer
a. Printing Mechanism:
- Impact Printers: These printers use a physical impact or striking mechanism to transfer ink onto the paper.
- Non-Impact Printers: These printers do not involve any physical impact between the printing mechanism and the paper.
b. Print Quality:
- Impact Printers: Due to their dot-matrix nature, impact printers produce relatively lower print quality compared to non-impact printers.
- Non-Impact Printers: Non-impact printers generally offer higher print quality. Inkjet printers can produce high-resolution prints with smooth gradients and sharp text.
c. Noise Level:
- Impact Printers: These printers are typically noisier because of the physical impact produced by the print head striking the paper. The sound of the pins or hammers hitting the ribbon and paper can be audible.
- Non-Impact Printers: Non-impact printers are generally quieter compared to impact printers. Inkjet printers and laser printers operate more silently since their printing mechanisms do not involve any physical impact.
d. Speed:
- Impact Printers: Impact printers tend to have slower print speeds compared to non-impact printers. The mechanical nature of the impact mechanism limits the speed at which the print head can strike and move across the page.
- Non-Impact Printers: Non-impact printers, particularly laser printers, are known for their faster print speeds. They can print pages more quickly due to their advanced technologies, such as laser beams or electrostatic charges.
e. Cost:
- Impact Printers: Impact printers are generally cheaper to purchase compared to non-impact printers.
- Non-Impact Printers: Non-impact printers, especially laser printers, are often more expensive upfront.
f. Maintenance:
Impact Printers: They also require less complex maintenance since they have fewer delicate components.
Non - impact Printers: They may require periodic maintenance, such as replacing toner cartridges or cleaning printheads, which can add to the overall cost of ownership.

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