Найти время в предложениях: 1. In 1971, Intel made a computer

1. In 1971, Intel made a computer chip called the 4004. Past Simple.
2. Some people still say that they have never used a computer. Present Simple, Present Perfect.
3. When the first computers were built in the 1940s and 1950s, they were enormous. Past Simple Passive Voice, Past Simple.
4. Suddenly, people could travel more easily and communicate more quickly. Past Simple.
5. The number of transistors on computer chips will double every eighteen months. Future Simple.