True/False 1. A NOT instruction transforms a 0 bit value to 1 and a 1 bit value

Q: True/False 1. A NOT instruction transforms a 0 bit value to 1 and a 1 bit value

1)T 2)F 3)T 4)T 5)F 6)T 7)F 7)F 8)T 9)F 10)F 11)T 12)F 13)F 14)F 15)T 16)T 17)F 18)T 19)T 20)F 21)T 22)F 23)T 24)T

ID: 3530494 • Letter: T

Question

True/False 1. A NOT instruction transforms a 0 bit value to 1 and a 1 bit value to 0. 2. A RISC CPU typically uses variable length instructions and has a large instruction set. 3. An AND instruction generates false unless the input bit values are 1 and 1. 4. One hertz is one clock cycle per second. 5. Doubling word size more than doubles the number of CPU components. 6. The cycle time of a processor is 1 divided by the clock rate (in Hz). 7. In many CPUs, a register called the program status word (PSW) stores condition codes, including those representing processing errors and the results of comparison operations. 8. A reduced instruction set computing (RISC) processor does not directly implement instructions that combine data movement and manipulation. 9. A word is the number of bits processed by the CPU in a single instruction. It also describes the size of a single register. 10. If A and B are two's complement values, the result of subtracting B from A can be computed by XORing B with a string of 1-bits, ADDing one to the result, then ADDing A. 11. Applying an exclusive OR instruction to input bit values 1 and 1 generates true. 12. The CPU may incur one or more wait states when it is idle pending the completion of an operation by another device within the computer system. 13. Doubling word size always increases program execution speed. 14. A CPU with multiple execution units can more efficiently evaluate the formula ((((a + b) x c) - d) / e). 15. A transistor is an electrical switch built of semiconducting materials. 16. The components of an instruction are its operand and one or more op codes. 17. Applying an inclusive OR instruction to input bit values 1 and 1 generates true. 18. Shifting a binary value one bit to the left divides the value by 2. 19. The CPU always determines the next instruction to fetch by looking in the instruction pointer. 20. The sign bit of an 8-bit twos complement value can be extracted by SHIFTing the value 7 bits to the right. 21. Multiple CPUs in the same computer system must cooperate to ensure that they don't interfere with one another (for example, both attempting to write the same memory location at the same time). 22. A CPU with multiple execution units can more efficiently evaluate the formula (((a + b) x (c + d)) - ((e + f) / (g + h))). 23. Resistance causes heat generation within electrical devices. 24. A microchip containing all of the components of a CPU is called a microprocessor. 25. The use of fixed length instructions simplifies the process of fetching and decoding those instructions. Point as Marked:

Explanation / Answer

1)T

2)F

3)T

4)T

5)F

6)T

7)F

8)T

9)F

10)F

11)T

12)F

13)F

14)F

15)T

16)T

17)F

18)T

19)T

20)F

21)T

22)F

23)T

24)T

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True/False 1. A NOT instruction transforms a 0 bit value to 1 and a 1 bit value

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