Choose the best one of the four answers given to fill in each blank. This chapter introduces digital computer, data types, the evolution of computers, and types of computers.   1   is known to all, it’s hard to find a field in   2   computers are not being used. Digital computer, also called electronic computer or computer, is a digital system that   3  various computational tasks. Digital computers use the   4  number system, which has two digits: 0 and 1.By using various coding   5   , groups of bits can be made to represent not only binary numbers   6   other discrete symbols, such as decimal digits or letters of the alphabet. A computer system consists of hardware system and software system. Programs tell the hardware what to do.   7  software is designed to accomplish real-world tasks in fields such as accounting, entertainment, and engineering. Computers are usually   8  into four broad categories: microcomputers, minicomputers, mainframe computers, and supercomputers. It’s hard to give a   9   definition to each type because computer speeds and storage   10   change rapidly. 1. A. As       B. It                     C. As it         D. That 2. A. what            B. which              C. where              D. when 3. A. performs  B. carries              C. makes             D. integrates 4. A. decimal       B. binary             C. Arabian   D. American 5. A. technique    B. Technology    C. techniques          D. technologies 6. A. instead of           B. rather than  C. but also             D. as well 7. A. Application       B. System    C. Word           D. Excel 8. A. put              B. madeC. conducted       D. classified 9. A. precious             B. progress C. proceedingD. precise 10. A. capacities  B. capable   C. capabilities D. capacity A. 1.A 2. B 3. A 4. B 5. C 6. C 7. A 8. D 9. D 1 0.C