1. Having loaded the software, you should restart your PC.
2. Having switched on the tape-recorder, I immediately noticed that it was not working properly.
3. Having obtained the instructions, the control unit causes other units to perform the operation.
4. Having replaced expensive, energy-consuming, and unreliable vacuum tubes, the transistor had a great influence on computer design.
5. Having remembered suddenly that she hadn't switched off the computer, she rushed back home.
6. Having broken into the bank's computer system, the hacker deleted all the information.
7. Having arranged the elements in a table, D.Mendeleyev predicted the existence of yet unknown elements.
8. Having received new information, the scientists continued their research.