Computers are electronic devices that perform various operations, such as data processing, storage, and communication, according to a set of instructions known as a program or software. They can be divided into two main categories: analog and digital.

The first computer was called ENIAC. It was huge, taking up more than 1800 square feet, and weighed over 27 tons. ¹⁾

IBM PC was designed by a group of 12 engineers. They were nicknamed “The Dirty Dozen.” ²⁾

The MyDoom (or Novarg) virus is a computer worm that can create indirect access in the victim PC's working framework. The first MyDoom virus (there have been a few variations) had two triggers. One trigger made the virus start a denial of service (DoS) attack beginning Feb. 1, 2004. The subsequent trigger instructed the virus to quit dispersing itself on Feb. 12, 2004. Even after the infection quit spreading, the indirect accesses made during the underlying infection stayed dynamic. ³⁾

The Amish are willing to adopt new technology for business reasons but keep it separate from their home and personal life. These computers are '80s-era technology that are limited to basic functions such as word-processing, spreadsheets, and accounting. The key selling point for these computers is that they do not have the capability for internet, video, or music. ⁴⁾