TYPES OF DEVICES
- INTERNAL HARD DISK
- EXTERNAL HARD DISK
- NETWORK ATTACHED STORANGE DEVICES
- MINIATURE HARD DISK
- SOLID STATE DRIVE
- MEMORY CARD
- USB FLASH DRIVE
- EXPRESS CARD MODULE
- CLOUD STORANGE
- OPTICAL DISK
- SMART CARD
- MICROFILM
- MAGNETIC SMART CARD
Wednesday 2 March 2011
STORAGE
STORAGE is to hold data, instruction, information for a future used.
TYPES OF DEVICES
TYPES OF DEVICES
OUTPUT DEVICES
OUTPUT is a data that has been process into a useful form to one or other people
TYPES OF DEVICES
TYPES OF DEVICES
- MONITOR
- PRINTER
- AUDIO
- VIDEO
- FAX
INPUT DEVICES
INPUT is any data and information that enter into a memory in a computer
TYPES OF DEVICE
TYPES OF DEVICE
- KEYBOARD
- MOUSE
- OPTICAL MOUSE
- TRACKBALL
- TOUCHPAD AND POINTING STICKS
- LIGHT PEN
- TOUCH SCREEN
- DIGITAL PEN
- GAME CONTROLLER
- MICROPHONE
- WEB CAM
- SCANNER
- BAR CODE READER
- BIOMETRIC DEVICE
- MAGNETIC STRIPE CARD READER
TYPES OF WEBSITES
- PORTAL
- NEWS
- INFORMATIONAL
- BUSINESS/MARKETING
- BLOG
- WIKIPEDIA
- ONLINE SOCIAL NETWORKS
- EDUCATIONAL
- ENTERTAIMENTS
- ADVOCACY
EXAMPLES OF COMPUTER USER
- HOME USER
- SOHO(SMALL OFFICES/HOME OFFICES USER)
- MOBILE USER
- POWER USER
- ENTERPRISE USER
COMPUTER APPLICATIONS IN SOCIETY
- EDUCATIONS
- FINANCE
- GOVERNMENT
- HEALTH CARE
- SCIENCE
- PUBLISHING
- TRAVEL
- MANUFACTURING
MOBILE COMPUTERS AND MOBILE DEVICES
- NOTEBOOK COMPUTERS
- TABLETS PC
- MOBILE DEVICES
- SMART PHONES
- PDA
- HANDHELD COMPUTERS
- PORTABLE MEDIA PLAYER
- DIGITAL CAMERAS
CATEGORIES OF COMPUTERS
1.PERSONAL COMPUTER
contains a processor, memory, input, output, and storage devices.
2.DESKTOP COMPUTER
system unit, input devices, output devices, and many other devices are fit entirely on or under a desk or table.
contains a processor, memory, input, output, and storage devices.
2.DESKTOP COMPUTER
system unit, input devices, output devices, and many other devices are fit entirely on or under a desk or table.
Monday 28 February 2011
introduction to computer
WHAT IS COMPUTER???
computer is an electronic device,operating under the control of instructionsstored in its own memory, that can accept data, process the data according to specified rules, produce results, and store the results, and stored the results for future use
ADVANTAGES AND DISADVANTAGES OF USING COMPUTERS
>ADVANTAGES<
SPEED:
When data,instruction,and information flow along electronic circuit in a computer,they travel at incredibility fast speed.many computer process billion or trillion of operations in a single second.
RELIABILITY:
The electronic components in modern computer are dependable and reliable because they rarely break.
CONSISTENCY:
Given the same input and process,a computer will produce the same result.Computer generate error free result,provide the input is correct and the instruction work.
STORAGE:
Computer store enormous amount of data and make this data available for processing anytimes it is needed.
COMMUNICATIONS:
Most computer today can comunicate with other computer, often wirelessly.Computers allow user to communicated with each other.
>DISADVANTAGES<
VIOLATION OF PRIVACY:
In many instantly,where personal and information were not protected completely.
PUBLIC SAFETY:
Adults, teens, and children around the world are using computer to share publicly their photo, videos, journal, music, and other personal information.
IMPACT ON LABOUR FORCE:
Althought computer have improve productivity and creates an entire industry with hundreds of thousand of new job the skills of millions of employees have been replaced by computer.Thus,it is crucial that worker keep their education up to date.
HEALTH RISK:
Prolonged or improper computer used can lead to health injuries or disorders.computer used to protect themselves from health risks throught proper workplaces design good posture while at the computer and appropriately spaced work break.
IMPACT ON ENVIRONMENT:
Computer manufacturing processes and computer waste and depleting natural resources and polluting the envinronment.
computer is an electronic device,operating under the control of instructionsstored in its own memory, that can accept data, process the data according to specified rules, produce results, and store the results, and stored the results for future use
ADVANTAGES AND DISADVANTAGES OF USING COMPUTERS
>ADVANTAGES<
SPEED:
When data,instruction,and information flow along electronic circuit in a computer,they travel at incredibility fast speed.many computer process billion or trillion of operations in a single second.
RELIABILITY:
The electronic components in modern computer are dependable and reliable because they rarely break.
CONSISTENCY:
Given the same input and process,a computer will produce the same result.Computer generate error free result,provide the input is correct and the instruction work.
STORAGE:
Computer store enormous amount of data and make this data available for processing anytimes it is needed.
COMMUNICATIONS:
Most computer today can comunicate with other computer, often wirelessly.Computers allow user to communicated with each other.
>DISADVANTAGES<
VIOLATION OF PRIVACY:
In many instantly,where personal and information were not protected completely.
PUBLIC SAFETY:
Adults, teens, and children around the world are using computer to share publicly their photo, videos, journal, music, and other personal information.
IMPACT ON LABOUR FORCE:
Althought computer have improve productivity and creates an entire industry with hundreds of thousand of new job the skills of millions of employees have been replaced by computer.Thus,it is crucial that worker keep their education up to date.
HEALTH RISK:
Prolonged or improper computer used can lead to health injuries or disorders.computer used to protect themselves from health risks throught proper workplaces design good posture while at the computer and appropriately spaced work break.
IMPACT ON ENVIRONMENT:
Computer manufacturing processes and computer waste and depleting natural resources and polluting the envinronment.
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