1. The abacus … about 5,000 years ago. b) emerged
2. The first all-electronic computer … by 1940. d) had been developed;
3. In 1694 Pascal’s invention … . a) was improved
4. The transistor … the large vacuum tube in televisions, radios and computers. a) replaced
5. Scientists … to fit even more components on a single chip very soon.
c) will manage
6. In 1830 Babbage … to build a general-purpose machine. b) proposed
7. By the early part of the 20th century electromechanical machines … .
a) had been developed
8. Data … a day before yesterday. d) were processed;
9. We … the term “processing” meaning “data processing”. c) use
10. Processing … operation on data to convert them into useful information.
b) is called
11. The tested method … to correct further errors. a) will be employed
12. This technique … now to develop a new computer program. b) is being applied
13. Many computer programs … recently. c) have been created
14. Next seminar our group … the history of computer development.
a) will be discussing
15. By 1951 the Census Bureau … the first UNIVAC computer. b) had installed
