Помогите пожалуйста определить время
Define the tense-forms in the following sentences and translate them into Ukrainian:
1. In 1971, Intel made a computer chip called the 4004.
2. Some people still say that they have never used a computer.
3. When the first computers were built in the 1940s and 1950s, they were enormous.
4. Suddenly, people could travel more easily and communicate more quickly.
5. The number of transistors on computer chips will double every eighteen months.