Ответ:

1. Electronic television was first successfully demonstrated in San Francisco on Sept. 7, 1927.

2. The system was designed by Ph. T. Farnsworth, a 21-year-old inventor.

3. Television programming begin to take some steps away from radio formats while Farnsworth was in high school.

4. In 1964 color broadcasting began on prime-time television.

5. The hold of government-funded networks begin to weaken because as cable and direct-satellite television systems increased the number of channels.

6. In the 1980s viewers gain the ability to record and replay programs, to rent and watch movies in their own homes.

7. The first transmissions of high definition television began in 1998.

8. Standard television sets have to be replaced or modified because they can't pick up HDTV.

Объяснение: