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Know your computer: For competitive exams

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  1. The mouse was invented by Douglas Engelbart in 1964
  2. A floppy disk is a type of disk storage composed of a disk of thin and flexible magnetic storage medium, sealed in a rectangular plastic enclosure lined with fabric that removes dust particles.
  3. Creeper virus is a computer virus that is most commonly recognized as the first computer virus.
  4.  A computer virus is a malicious software program loaded onto a user’s computer without the user’s knowledge and performs malicious actions.
  5. ENIAC (Electronic Numerical Integrator and Computer) was the first electronic general-purpose computer.
  6. ENIAC was formally dedicated at the University of Pennsylvania on February 15, 1946 and was heralded as a “Giant Brain” by the press.
  7. UNIVAC, which stood for Universal Automatic Computer, was developed by J. Presper Eckert and John Mauchly, makers of ENIAC.
  8. The UNIVAC was used to calculate company payrolls, sales records, analysis of sales performance and other company business. The UNIVAC could perform 90,000 transactions per month.
  9. Turing Award, known as the ‘Nobel Prize of computing. The award is named after Alan Turing, a British mathematician and reader in mathematics at the University of Manchester.
  10. The first UPS was patented by a scientist named John Hanley, only it wasn’t called an Uninterruptible Power Supply at the time.
  11. Short for Electronic Delay Storage Automatic Calculator, EDSAC was an early computer dated around 1949. EDSAC performed its first calculation at the Cambridge University in England.
  12. The UNIVAC 1103 or ERA 1103, a successor to the UNIVAC 1101, was a computer system designed by Engineering Research Associates and built by the Remington Rand corporation in October 1953.
  13. Unix is a family of multitasking, multiuser computer operating systems that derive from the original AT&T Unix, development starting in the 1970s at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others.
  14. Linus Torvalds invented Linux in 1991. He was a student at the University of Helsinki in Finland where he had been using Minix, a non-free Unix-like system, and began writing his own kernel.
  15. There are 94 printing characters in ASCII.

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