Understanding Communication Components and Ports in Microcomputers, Slides of Data Communication Systems and Computer Networks

Download Understanding Communication Components and Ports in Microcomputers and more Slides Data Communication Systems and Computer Networks in PDF only on Docsity!

Microcomputer as a Communication

Device

Chapter Objectives

• Examine the components of the motherboard that relate to communication
• Describe a few communication links involving the microcomputer
• Discuss the Port Settings and Port Resources
• Outline the procedure for installing and configuring a multi-port interface card

END OF CHAPTER INTRODUCTION

MODULE

Overview of Communication Components of a Microcomputer

Port and a Bus

• Port is used for connecting only one device
  • Serial port, parallel port etc.
• A bus can be used for connecting multiple devices
  • PCI, USB, SCSI etc.

Motherboard (Main Board)

PCI expansion

slots.

ISA expansion

slots.

Built-in serial and

parallel port connection.

Older Expansion Bus Technologies

• ISA (Industry Standard Association )
• EISA (Extended Industry Standard Association)
• MCA (Micro Channel Architecture)
• VESA (Video Electronic Standards Association)

PCI: Newer Expansion Bus Technology

• PCI (Peripheral Component Interconnect)
• Developed by Intel
• Found in most Intel based microcomputers
• Supports plug-and-play
• Continuously being improved by releasing new chip sets

Expansion Bus Width

• 8, 16, 32 and 64 bits wide
• 16 - bit is common with ISA technology
• 32 - bit is the norm with PCI technology
• PCI technology also supports 64-bit bus
• Most PCs have a combination of 16-bit and 32-bit buses
  • 16 - bit ISA slots and 32-bit PCI slots

PCI Bus Speed

• Older PCI buses operated at 33 MHz
• Newer PCI buses operate at speeds of 66 MHz, 100 MHz and 133 MHz

Sample Expansion Bus Configurations: Past an Future

• Past
  • Three 32-bit EISA slots and five 16-bit ISA slots
  • Two 32-bit VESA slots, five 16-bit ISA slots and one 8-bit ISA slot
• Current
  • 32 - bit and 64-bit PCI slots
  • PCI Express technology or higher
  • Faster bus speeds in MHz..

PCI Bus Technology

• PCI 1.
• PCI 2.
• PCI Express
  • PCI X1, X2, X4, X8 and X

END OF MODULE

MODULE

Communication Ports