Since I was born I see the transition of computers from a larger and more weight to the smaller, lighter. The computer has for a long time, but at the beginning of electronic mechanisms used within the computer era. The first computer look consists of approximately 18000 tube vacuum tube electronics, computers, this mechanism is installed in approximately 20 × 10 square metres and weighs more than 30 tons, That there is a problem with life, this computer has broken more frequently. Now, the computer can be processed as well as store information at a very complicated math calculations can be easy with the higher rate. Another one, called mini-computers.