Ink-jet printers or band printers are classified based on the printing method.

1. Supercomputer is a powerful computer in terms of data storage capacity, performance and data processing.

2. A supercomputer is a powerful computer that can process large amounts of data and computations very quickly.

3. Supercomputers perform copious amounts of mathematical calculations.

4. Supercomputers are used for a wide variety of applications, including meteorology, medical research, and nuclear weapons research.

a virus that spreads in a computer is a type of malicious computer program. Computer viruses are software programs designed to replicate themselves and spread from one computer to another. They can attach themselves to legitimate programs or documents, and when the infected program or document is executed, the virus activates and starts spreading to other files and systems. Viruses can cause various harmful effects, such as corrupting or deleting files, stealing sensitive information, or disrupting computer operations. Antivirus software and best practices, such as avoiding suspicious downloads and email attachments, are used to protect computers from these malicious programs.