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本套试卷集合了考试编委会的理论成果。专家们为考生提供了题目的答案，并逐题进行了讲解和分析。每道题在给出答案的同时，也给出了详尽透彻的解析，帮助考生进行知识点的巩固和记忆，让考生知其然，也知其所以然，从而能够把知识灵活自如地运用到实际中去。
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1. In almost all modern computers, each memory cell is set up to store binary numbers in groups of_______ (called a byte).Each byte is able to represent 256 different numbers (2^8 = 256); either from 0 to 255 or -128 to +127.
A. One bit
B. two bits
C. eight bits
D. eight bit
2. A general purpose computer has four main components: the arithmetic logic unit (ALU),_______, the memory, and the input and output devices (collectively termed I/O).
A. the control unit
B. mouse
C. display
D. disc
3. Hard disk drives , floppy disk drives and _______drives serve as both input and output.
A. Optical magnetic
B. keyboard
C. mouse
D. optical disc
4. One means by which this is done is with a special signal called an _______ which can periodically cause the computer to stop executing instructions where it was and do something else instead.
A. pause
B. stop
C. interrupt
D. exit
5. Some computers are designed to_________ their work across several CPUS in a multiprocessing configuration.
A. distribute
B. distributed
C. distributing
D. distributes
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