文档介绍：Chapter 5
anization
Distinguish between the ponents of puter
hardware.
List the functionality of ponent.
Understand memory addressing and calculate the number
of bytes for a specified purpose.
After reading this chapter, the reader should be able to:
OBJECTIVES
Distinguish between different types of memories.
Understand how each input/output device works.
Continued on the next slide
Understand the systems used to connect different
components together.
Understand the addressing system for input/output devices.
Understand the program execution and machine cycles.
OBJECTIVES (continued)
Distinguish between programmed I/O, interrupt-driven I/O and direct memory access (DMA).
Understand the two major architectures used to define
the instruction sets of puter: CISC and RISC.
Central processing Unit(CPU)
Input/Output
main memory
Contents
Program Execution
Two different Architectures
Subsystem Interconnection
Key Terms
Summary
von Neumann model
How to connect ponents?
Figure 5-1
Computer hardware (subsystems)
CENTRAL
PROCESSING
UNIT (CPU)
Figure 5-2
CPU
The arithmetic logic unit(ALU) performs
Arithmetic Operation;
Logic Operation.
ALU
Registers are fast stand-alone storage locations that hold data temporarily.
Registers
Data Register: R1 R2 R3
Instruction register: I
Program Counter: PC