Reference no: EM131182852

Question 1. Dynamic memory requires _____ that is not needed for other types of memory.

A. refresh

B. data bus buffer

C. address decoder

D. dual power supply

 

Question 2. Main memory in virtually all computers contains how many data bits at each address?

A. 16 (two bytes, or one word, per address)

B. Eight (one byte per address)

C. One bit per address

D. Any of the above, it depends on the CPU

E. None of the above

 

Question 3.In a CPU with a 16-bit program counter, what is the maximum, directly accessible code space?

A. 64Kbytes

B. 32KB

C. 2KB

D. 4KB

E. None of the above

 

Question 4. Which of the following is correct for the “von Neumann” architecture?

A. CPU data input and output use separate data buses.

B. Multiple ALUs in the same CPU, one for integer and one for floating point arithmetic.

C. Multiple instructions are executed concurrently.

D. Instructions and data are stored in the same memory.

 

Question 5.Operations performed by the Control Unit include

A. telling the ALU which operation to perform.

B. routing data to/from the ALU.

C. decoding instructions.

D. All of the above

E. None of the above

 

Question 6.What direction does data flow on a WRITE bus cycle?

A. From the CPU to memory or I/O port

B. From memory or an I/O port into the CPU

C. From the bus into the CPU

D. All of the above

E. None of the above

 

Question 7.For the CodeWarrior assembler,

A. label must start on first column; instruction and directive must not start on first column.

B. label must not start on first column; instruction and directive must start on first column.

C. label must start on first column; instruction and directive must start on first column.

D. label must not start on first column; instruction and directive must not start on first column.

 

Question 8.The “LDAB #$AA” is _____-byte instruction.

A. one

B. two

C. three

D. four

E. shell, Week 3 Lecture

 

Question 9. Which statement about CodeWarrior assembly language is true?

A. It is case sensitive.

B. Instructions must start in Column 1.

C. Labels must start in Column 1 unless followed by a colon.

D. All of the above

E. None of the above

 

Question 10. Which of the following is wrong?

A. LDX          #$5000

B. LDX          #2550

C. LDX          #$10000

D. LDX          #$00