7. ( ) is the number of times a wave repeats during a specific time interval,that is how many times it completes a cycle in one second. A. Amplitude B. Frequency C. Analog signals D. Digital signals ...

2. Two types of software are ( ) and application software. A. system software B. system call C. system crash D. system hardware ...

7. C++ is an object-oriented programming language.( ) A. 错误 B. 正确 ...

2. Language translators convert the programming instructions into a language that computers understand and process.( ) A. 错误 B. 正确 ...

17. A ( ) is a cable which is capable of carrying signals representing data from one place to another. A. bus B. USB C. port D. keyboard ...

12. ( ) are the peripherals that allow users to enter data, programs, commands, and user responses into a computer and transform them into a suitable form for processing. A. RAM B. ROM C. Input devices D. Memory ...

7. ( ) stands for Read Only Memory, it is the computer memory on which data has been prerecorded. A. RAM B. ROM C. CPU D. Memory ...

2. The ( ) is the communications medium for the entire computer system. A. system board B. input C. output D. bus ...

7. Software refers to the physical equipment that can perform the basic functions contained within the data processing cycle.( ) A. 错误 B. 正确 ...

2. Information is summarized data or manipulated data.( ) A. 错误 B. 正确 ...