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Computers by Mind Map: Computers
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Computers

components of computer

Input Devices

hardware component to allows you to enter dataand instructions into a computer, keyboard, mouse, microphone, scanner, webcam

Output Devices

hardware component that conveys informationto one or more people, printer, moniter, speakers

System Unit

electronic component that used to process data, Motherboard, CPU, interprets and carries out the basic instruction that operate the computer, Memory, store instructions waiting to be excuted and data needed by thost instructions

Storage Devices

storage holds data,instruction,and information for future use, Flash drives, hard disks, opticals discs, Cds, Dvds, Blu-rays Discs, memory cards

Communication Devices

Hardware component that enables a computers to sent and recieve data, cables, telephone lines, cellular radio network, satellites, other transmission media such as satellites and cellular radio network are wireless maens thay have no lines

Adventages and Disadventages of computer

adventages

speed

reliability

consistency

storage

communications

disadventages

health risks

violation of privacy

public safety

impact on Labor Force

green computing

networks and the internet

network is a collection of computers and device connected together offen wirelessly via communications devices and transmission media

networks allow computers to shared resource such as hardware,software,data,information

internet is a worldwide collection of networks that connect of million of business,goverment,agencies,education instructions,and individuals

web page can contain text,graphics,animation,audio and videos

website is a collection of related web page

computers sofftware

consist of a series of related instruction,organized for a common purpose

System software, system software, consists of the programs that control or maintain the operations of the computer and its devices, operating system, set of programs that coordinated all the activities among computer hardware devices, Windows OS, Mac OS ,Apple'OS, utility program

Application softwares, Application software, consists of programs designed to make users more productive and/or assist them with personal tasks

software development

programmer (computer programmer), who develops software or writes the instructions that direct the computers to process data into information

Categaries of computer

personal computer (PC)

can perform all of its input,processing,output,and storage activities by itself

mobile computers

personal computer you can carry from place to place

notebook computers (labtop computter)

tablet PCs, combine the features of a tranditional notebook computer with the simplicity of pencil and paper

mobile devices

computer device small enough to hold in your hand

smart phones, offering the convenience of one-handed operation and an internet-enabled phone

PDA (personal digital assistant), provide personal information management functions such as calendar, an appointment book, an address book etc.

handheld computers, computer small enough to fit in one hand ,many communicate wirelessly with other devices or computer

portable media players, mobile devices on which you can store,organize,and play digital media

digital cameras, can allow user to take pictures and store the photographed images digitally

game consoles

mobile computing devices designed for single player or multi player video games

server

control access to the hardware,software,and other resources on a network and provide a centralized storage area for programs,data,information

mainframes

large,expensive,powerfull computer that can handle hundreds or thousands of connected user simultaneously

supercomputers

fastest,most powerful computer,and most expensive capable of processing more than one quadrillion instructions in a single second

embeded computer

special purpost computer that function as a component in a large product embeded are everywhere such as at home ,in your car, and at work

computer usages

home user

spend time on the computer for different reason

small office/home office(SOHO) user

include any company with fewer 50 employees

mobile user

who work on a computer or mobile device while away from a main office,home office or school

power user

required the capabilities of a workstation or other type of powerfull computers

enterprise user

who use a computer in the enterprise which has hundreds or thousands of employees or costomers

computer Applications in society

education

finance

online banking

goverment

the goverment provide citizens with up-to-date information

health care

science

publishing

process of making works avilable to the public such as books,maggazines,newspapers,music,film ,and video

travel

handheld navigation device gives users turn-by-turn voice -prompted direction to a destination

manufacturing

industries use CAM (Computer-aided manufacturing) to reduce product development costs