computerscience2a-blog

[computerscience2a-blog]

This photograph published in the November 1972 issue of Playboy magazine became the standard image in the field of image processing. The model is Lena Söderberg, a Swedish woman who is now 65 years old. So great is her popularity in image compression that she was the guest of honor at the Society for Imaging Science in Technology 50th Annual Conference in 1997.

[computerscience2a-blog]

In 1962, the programmer and scientist Steve Russel, together with other students from the Massachusetts Institute of Technology (MIT), created Spacewar!, which is considered the first interactive computer game (this place is disputed with the game Tennis for Two, a version primitive of the classic Pong).

[computerscience2a-blog]

Fred Cohen, considered the father of computer viruses, developed an application in 1983 that could infect computers and spread from one computer to another via floppy disks. A year later he published the book "Computer viruses: theory and experiments" where he classified these threats and identified them as problems related to National Security.

[computerscience2a-blog]

On April 29, 2015, it was 30 years since its launch.

It weighed 4.1 kg and cost more than $ 4,000. It was preceded by the Epson HX20 notebooks and the Osborne 1 (the first to achieve relative commercial success), both launched in 1981. It measured 12 inches by 12 inches and had the same features as desktop computers of the time.

[computerscience2a-blog]

The memory hierarchy is the pyramidal organization of memory in levels that computers have. The goal is to achieve the performance of high-speed memory at the cost of low-speed memory, based on the principle of closeness of references.