B) using the Active Voice.

1. The transistor was invented by American scientists in 1948.

2. The Pentium microprocessor is manufactured by the Intel Corporation.

3. Intel microprocessors are used in more than 80 percent of the world’s personal computers.

4. You will be shown how to load the software. [Our programmer]

5. The first PCs were made by IBM in 1981.

6. The Internet is often used by people to work at home.

7. The old record player was bought from the second-hand shop for five dollars. [Jack]

8. Ten billion operations per second will be performed by this supercomputer.

9. The traffic lights are controlled by a central computer.

10. Our computer network was crashed by the unknown virus.