选择题。 答案书写格式提示: 1-5 XXXXX 6-10 XXXXX 1. Which of the following is not one of the four parts that comprise a processor?______ A. Clock. B. Memory. C. Register. D. ALU. 2. A computer system contains input device, output device, CPU and ______. A. ROM B. RAM C. memory D. register 3. The processor consists of ______. A. clock, ALU, register and operation code B. ALU, instruction control, clock and register C. CPU, memory, register and clock D. instruction control, clock, operation code and operand 4. ______ is the soul and heart of a computer, and it can manipulate data and control the rest part of the computer. A. Memory B. Input device C. Register D. CPU 5. Which of the following tells the CPU what to do? ______ A. Instruction. B. Operand. C Operation code. D. Arithmetic and logic unit. 6. Which of the following tells the CPU where to find the data to be manipulated? ____ A. Clock. B. Instruction control unit. C. Operation code. D. Operand. 7. When we buy a computer, we usually consider the ______ first. and that means a clock’s frequency. A. main frequency B. board C. display D. keyboard 8. The arithmetic unit performs the ______ operations. A. arithmetic B. comparison C. logical D. all of the above 9.______ holds control information, key data and some intermediate results. A. Register B. Instruction control unit C. ALU D. Storage 10. When electric current is not allowed to pass through transistors on the microchip, the switch is ____ and it represents a _____ bit. A. off, 1 B. on, 1 C. on, 0 D. off, 0