1. The first-generation computers were very unreliable because the vacuum tubes burned out and they приходилось be replaced frequently.
2. Minicomputers produced in the late 1950s were cheaper than the mainframes, so that companies могли buy them rather than to lease them.
3. All you должен do is press a few buttons and the computer will do the rest for you.
4. Engineers могут use a light pen to modify a technical drawing on a computer screen.
5. Sales of computers dropped 30% and manufacturers были вынуждены sell their products below cost.
6. Persons or companies нельзя use copies of programs that were not purchased legitimately.
7. In future, programmable robots смогут perform more complicated tasks.
8. You придётся pay the cost of any repairs to the rental TVset.
9. If you не можешь answer your cell phone, your friends могут leave a message on your system.
10. The program instructions должны be complete and in appropriate sequence, otherwise wrong answers will result.
11. The server не смог handle the traffic and crashed.
12. The Analytical Engine должна была be a general-purpose, programmable digital computer.