Micro Computer Hardware
A large diversity of devices
are in use.
Four categories.
System Unit
Input/ Output Devices
Secondary Storage
Devices
Communication Devices
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Overview of Micro Computer Hardware: System Units, I/O, Storage, Communication, Packages, Slides of Fundamentals of E-Commerce
An introduction to various components of micro computer hardware, including system units, input/output devices, secondary storage devices, communication devices, and integrated packages. It covers the functions and features of each category, as well as common examples and connections to communication networks.
Typology: Slides
2012/2013
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Micro Computer Hardware A large diversity of devicesare in use. Four categories. System Unit Input/ Output Devices Secondary StorageDevices Communication Devices
…Micro Computer Hardware System Unit Corresponds to the
Circuit board
housed inside the
computer cabinet. Also termed as
Mother Board
Every other device has a connection with this circuitry. Two main components are:^ Microprocessor Chip^ Controls and manipulates data to produce information.^ Memory Chip(s)
(RAM) Video Clip: How to build a PC? Part I & II Holds data & program instructions temporarily (volatile). (Available on WebCT)
…Micro Computer Hardware Secondary Storage Devices Holds data & program
(like RAM) Permanently store
(non-volatile) the contents (unlike RAM). Floppy^ Magnetic media (small capacity/ slower in access)^ Hard disk^ Metallic media (large capacity/ more fast accessible)^ Optical disks^ Laser technology (largest capacity/ fast access).^ CD-ROMS
(only readable)/
CD-RW^ (read/write)/
DVD^ (Digital
Versatile Discs)
…Micro Computer Hardware Communication Devices^ Controls the communication between Computers
.
Sends/ Receives data
or program bits on different media like telephone lines coaxial cable^
(Chapter 7 pg155) fiber optics cable Satellite links Modem^ is the most widely used (Uses telephone lines). A modem is capable of
(Chapter 7 pg153) MODulate^ (data to telephone signals) and DEModulate^ (telephone signals to data)
Computer Network Classification Classified on the basis of
geographical boundaries
. LAN - within a building MAN – across buildings WAN – country wide/ world wide
(Chapter 7 pg165)
LANExample
WAN Example
Internet & the Web
Internet^ – the biggest network around World Wide Web
- an Internet based
service^ which
allows a^ multimedia interface
to^ Internet resources (information, storage, email space etc.)
Integrated Packages
A single program that provides the functionalityof several widely used programs^ Popular with many home users^ Classified as
personal^ or
home software