I. Questions and answers
1, the whole computer system consists of (c). Arithmetic unit, controller, memory, input device and output device; B host and external equipment; C hardware system and software system; Main chassis, monitor, keyboard, mouse and printer.
2. Among the following software, (d) is not operating system software. AWindowsxp、Bunix、Clinux、Dmicrosoftoffice .
3. At most, one byte can form (d) different codes. A8 B 16 C 128 D256。
4. Any program must be loaded in (c) before it can be executed by CPU. A disk b hard disk c memory d external storage.
5. The two components that make up a computer CPU are (a) arithmetic unit and controller B controller and register C arithmetic unit and memory D controller and memory.
6. In the Windows window menu, if there is a black triangle on the right behind a command item, it means the command item (A). There are subordinate submenus. B click the mouse to execute directly. Double-click the mouse to execute directly. D Right-click the mouse to execute directly.
7, the computer's three kinds of bus, not including (c). A control bus b address bus c transmission bus d data bus.
8. Operating system is divided into three levels according to its functional relationship: system layer, management layer and (d). A data layer b logic layer c user layer d application layer.
9. The pinyin input code of Chinese characters belongs to (a) of Chinese characters. A outer code b inner code CASCII code d standard code.
10, Windows clipboard is used to temporarily store information (C)A window B folder C memory segment D disk segment.
Second, what is the National Computer Rank Examination?
NCRE (National Computer Rank Examination for short) is a national computer level assessment system approved by the former State Education Commission (now the Ministry of Education) and sponsored by the Education Examination Institute of the Ministry of Education (formerly the Examination Center of the Ministry of Education), which is geared to the society and used to examine candidates' computer application knowledge and skills. The National Computer Rank Examination is held four times a year, but the specific number of examinations has been announced by local organizers.