2018 컴퓨터 구조 과제 1 (chapter 1,2,3)- 단국대학교 소프트웨어학과

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"2018 컴퓨터 구조 과제 1 - 단국대학교 소프트웨어학과"에 대한 내용입니다.

목차

1. Explain the internal structures of a computer using IAS computer (in Figure 1.6)

2. Indicate the width(in bits) of each connection(data/address path) between components(registers, AL circuits, control circuits, memory, I/O,..) in IAS Computer. (in Figure 1.6)

3. When is the Harmonic mean an appropriate measure of the value of a system?

4. While at Bob’s computer shop, you overhear a customer asking Bob what is the fastest computer in the store. Bob replies, the fastest Mac we have runs at a clock speed of 1.2Ghz. If you really want the fastest machine, you should buy 2.4Ghz Intel Pentium, instead. Is Bob correct? Explain your answer.

5. Suppose that 40% of the computing time is consumed by arithmetic operations in a system. If the arithmetic module of a system is speedup by a factor of 10, Then what is the maximum speedup of this system?

6. Generally, a computer operates by repetitively performing an instruction cycle, which consists of two sub cycles: a fetch cycle and an execute cycle. Describe in English the tasks accomplished during the fetch cycle and those accomplished during the execute cycle.

7. Explain the purpose of I/O interrupt. How the instruction cycle in the problem 6 is modified to accommodate interrupts?

8. Using a typical benchmark program, the following machine characteristics results:
processorClock(Mhz)Performance (MIPS)CPU time(sec)
Vax 11/7805112x
IBM RS/60002518x
a) What are the CPI values for the two machines?
b) Show the relative size the executed instruction count of two machines.

9. Compare a hardwired program in the customized hardware and a software program in the general purpose hardware.

10. Explain why contemporary systems rely on point-to-point interconnection rather than shared bus.

본문내용

1.＊Central Processing Unit(CPU)
①Arithmetic-logic unit(CA)
- AC and MQ(Accumulator and Multiplier Quotient):일시적 피연산자 및 ALU연산 결 과를 저장하는데 사용
- MBR(Memory Address Resister):메모리에서 가져온 데이터를 보유하고 CPU가 처리할 준비가 되거나 메모리에 저장되기를 기다리는 데이터를 보유하는 양방향 레지스터
②Program control unit(CC)
- PC(Program Counter):실행될 메모리에서 가져올 다음 명령어 쌍의 주소를 포함하는 카운터
- IBR(Instruction Buffer Register):메모리에서 단어의 오른쪽 명령을 일시적으로 저장하는데 사용
- IR(Instruction Register):실행 중인 8비트 op코드 명령어를 포함
- MAR(Memory Address Register):MBR에서 쓰거나 읽히는 단어의 메모리 주소를 지정

참고 자료

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