Presentation Transcript
3: 3 Computer Hardware
Chapter Objectives: Identify the major types, trends, and uses of microcomputer, midrange, and mainframe computer systems.
Outline the major technologies and uses of computer peripherals for input, output, and storage.
Identify and give examples of the components and functions of a computer system.
Identify the computer systems and peripherals you would acquire or recommend for a business of your choice, and explain the reasons for your selections. Chapter Objectives
Computer System Categories: Computer System Categories
Trends in Computer System Capabilities: Trends in Computer System Capabilities
Microcomputer Systems: Microcomputer Systems Handheld Computers
PDA, Information Appliances
Notebook Computers
Desktop Computers
Workstations
Network Server
Powerful microcomputer used in small LANs
Network Computers and Terminals: Network Computers and Terminals Network Computer (Thin Client)
NetPC
Network Terminal Benefits
Lower purchase cost
Easier maintenance
Easier software distribution and licensing
Computer platform standardization
Reduced end user support requirements
Improved manageability
Computer System Components: Computer System Components
Input Technology Trends: Input Technology Trends
Common Input Devices: Common Input Devices Keyboard
Pointing Devices
Pen Based Computing
Speech Recognition
Optical Scanning
Magnetic Ink Character Recognition
Smart Cards
Digital Cameras
Output Technology Trends: Output Technology Trends
Common Output Devices: Common Output Devices Video Output
CRT
LCD
Printed Output
Inkjet
Laser
Storage Trends: Storage Trends
Primary & Secondary Storage Media: Primary & Secondary Storage Media
Characteristics of Magnetic Disks: Characteristics of Magnetic Disks
Chapter Summary: Chapter Summary A computer system is a system of information processing components that perform input, processing, output, storage and control functions.
The hardware components in a computer include input and output devices, a central processing unit (CPU), and primary and secondary storage.
There are three major categories of computers: microcomputers, midrange computers and mainframe computers
Chapter Summary (cont): Chapter Summary (cont) Microcomputers are used as personal computers, but are also interconnected in a variety of telecommunications networks.
Midrange computers are increasingly being used as powerful network servers and for many multi-user business data processing and scientific applications.
Mainframe computers are larger and more powerful and are used to handle information processing needs for large organizations .
Chapter Summary (cont): Chapter Summary (cont) Peripheral devices used for input and output come in a variety shape and sizes. Future trends are towards devices that communicate naturally and are quick and easier to use.