(1) The minimum unit time of computer operation is ( ). A. Clock cycle B. Instruction cycle C. CPU cycle D. Interrupt cycle (2) The computer is composed of many parts, the core of which is ( ). A. Data bus B. Arithmetic logic operation unit C. Add up register D. Multiway switch (3) The instruction cycle refers to ( ). A. The time for the CPU to execute an instruction B. The CPU accesses an instruction from the main processor plus the time to execute the instruction C. Clock cycle time D. The time when the CPU accesses an instruction from the master (4) Because the CPU internal operation speed is fast, and the CPU access a memory time is long, so the machine period is usually defined by (). A. Instruction cycle B. Access cycle C. Interaddress period D. Execution period (5) The purpose of adding cache between main memory and CPU is ( ). A. Solve the speed matching problem between CPU and main memory B. Expand the main storage capacity \&Computer Principles\& Final-term Exam C. It not only expands the main storage capacity, but also improves the access speed D. Expand auxiliary storage capacity (5) If [X]rscosppiement=1.1101010, then [X]kigs-magntude=(). A. 1.0010110 B. 0.0010110 C. 1.0010101 D. 0.1101010 (6) Compared with external memory, internal memory is characterized by ( ). A. Large capacity, fast speed, low cost B. Large capacity, slow speed, high cost C. Small capacity, fast speed, low cost D. Small capacity, fast speed, high cost (7) ( ) is used widely in processors to represent signed integers. A. 1's complement B. unsigned number C. 2's complement D. sign magnitude (8) The minimal number of the following numbers is ( ). A. (101110)2 B. (66)8 C. (101101)2 D. (39)16 (9) The largest number of the following is ( ). A. (98)16 B. (10011101)2 C. (140)8 D. (225)s (10) In order to facilitate the implementation of multi-level interrupt, the most effective way to save site information is to adopt ( ). A. general register B. storage C. External storage D. stack