Network Communications:Chapter 3
Introduction to Computer Architecture
Components of a Microcomputer
Control Unit
ArithmeticLogic Unit
ProgrammableI/O Interrupt
MemoryParallel Input/
Output InterfaceSerial Input/
Output Interface
Direct memonryAccess (DMA)
Address Bus
Data Bus
Control Bus
CPU
Registers
Figure 3.1
Microprocessor and CPU Block Diagram
Control Unit
RegisterRegisterRegisterRegister
ALU
Microprocessor
Control Unit
Register
Register
Register
ALU
CPU
Figure 3.2
RAM3 Address Lines, 4 Data Lines
000001
010011
100101
110
111
Address Bus Data Bus
Read/Write
Figure 3.3
RAMBlock Diagram
RAM Data Bus
Address Bus
Read
Write
Chip Select
Figure 3.4
SDRAMBlock Diagram
Control Bus Address Bus Data Bus
Control
Top Bank
Bottom Bank
Output buffer
Figure 3.5
DRAM Simm
Figure 3.6
Centronics Connectors
Figure 3.7
Centronics 36pin male Centronics 34 pin female
Serial PortsRS232
Figure 3.8
DB-9DB-25
Memory Hierarchy
CPU
Cache MemorySRAM
Main MemoryDRAM and SDRAM
Secondary MemoryHard Disk, Tape ,and Floppy Disk
Figure 3.10
SCSI Bus
Hard Drive Floppy Scanner CD-Rom
Figure 3.11
SCSI Connectors
SCSI-1 SCSI-2 SCSI-3
Figure 3.12
ISA Card
16 bit ISA
Figure 3.13
EISA Card(Obsolete)
EISA
Figure 3.14
PCI Card
PC II
Figure 3.15
PCMCIAPC Card
Figure 3.16
USB Architecture
CPU Memory
Serial Interface
Transceiver
HUBSerial Ports
USBController
Computer BUS
Figure 3.17
USB Cable / Expansion
V BusD+D-GND
USBSerialPort
Figure 3.18
HostHub1
P1 P2 P3
Hub2
P4 P5 P6
5 meters
Figure 3.19