Input and Output Devices and Types of Computer
Input and Output device means:
Input:
#Numerical Keys:Numerical keys contains number from 0 to 9.
#Alphabetic Keys:Alphabetic keys contains alphabet from A to Z.
#Function Keys:Function keys are programmable keys
#Arrow Keys:Curser control keys include four directional left,right,up and down keys.
#Home Key:It is use to return the cursor to the beginning of line or beginning of the document.
#End Key:It move the cursor to the end of the line or end of the document .
#Control Key:It perform special operation with the combination of other key.
#Enter Key:It use to finish ,entry and began the new entry in document.
2.Pointing Devices:A pointing device is used to commmunicate with computer by pointing to the location the computer.Some commonly used pointing devices are mouse,trackball,joystick,light pen etc.
#Mouse:Mouse is a small hand held device which having two or three button on its upper side and also has a small wheel between the button.
#Trackball:It is another pointing device which is an alternaating to mouse.
#Joystick:It is a device that move in all directions and controls the movement of cursor.
#Light Pen:Light pen is hand held electronically pointing device which is used for making drawings graphic on the screen.
3.Bar Code Reader:BCR is an point device used for reading printed bar code availaable on product to be sold.
4.Optical Mark Reaader:OMR is used to detect marks on a paper.
5.Magnetic Ink Character Reader:MICR read the character by examining their shape in a matrix from and the information is then pass on to the computer.
6.Web Camera:Web is used for video conference or online chatting etc.
7.Scanner:Used to convert data and image into an electronic form that can be storred on the computer.
Output Device:The output device are those devices through which we get results or information on the computer.Most computer data output that is meant for human is in the form of audio or video.
Output Devices:
1.Monitor:The monitor is provides along with computer to view the display results.
2.Printer:Printer is most iportant output device which is used to print the information on the paper.
3.Plotter:Use a pencil,marker or other writing tool for making drawings or vector graphics.
4.Speaker:Speaker is an also of output device.That receive sound in form of electronic current.
5.Projector:Project it as faithfully as possible on to a screen or other plane surface.
Types of Computer:There are different types of computers with respect to size,speed,storage capacity and cost.
1.Micro Computer:Small in size and less cost.It is also called personal computer.
Example:Commondore 64,IBMPC..
#Desktop Computer:Designed to fit comfortably on top of desks.
#Laptop Computer:Small size,can be placed on the Lap.
#Tablet Computers:Smaller and lighter than laptop.
2.Mini Computer:Biger than micro computer.Capable to support 4 to 200 users.
Example:PDP-8
3.Mainframe Computer:Very powerful,more than 100 users can use this computer.
Example:IBMZ series,PDP-10.
4.Super Computers:Most powerful computers with huge processing speed.
Example:CRAY-1,CARY-2.
Computer plays vital role to change our world.Nowadays we cann't imagine our life without computers
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Input:
Input devices are those devices through which we can enter data and instruction into the computer device is any hardware device that sends data to a computer allowing to interact with and control it.
Input Devices:
1.Keyboard: Keyboard is one of the most common input .Keyboard is used to enter the data or information which may be in numerical or alphabetical form.There are different keys in key keyboard.
#Alphabetic Keys:Alphabetic keys contains alphabet from A to Z.
#Function Keys:Function keys are programmable keys
#Home Key:It is use to return the cursor to the beginning of line or beginning of the document.
#End Key:It move the cursor to the end of the line or end of the document .
#Control Key:It perform special operation with the combination of other key.
#Enter Key:It use to finish ,entry and began the new entry in document.
2.Pointing Devices:A pointing device is used to commmunicate with computer by pointing to the location the computer.Some commonly used pointing devices are mouse,trackball,joystick,light pen etc.
#Mouse:Mouse is a small hand held device which having two or three button on its upper side and also has a small wheel between the button.
#Trackball:It is another pointing device which is an alternaating to mouse.
#Joystick:It is a device that move in all directions and controls the movement of cursor.
#Light Pen:Light pen is hand held electronically pointing device which is used for making drawings graphic on the screen.
3.Bar Code Reader:BCR is an point device used for reading printed bar code availaable on product to be sold.
4.Optical Mark Reaader:OMR is used to detect marks on a paper.
5.Magnetic Ink Character Reader:MICR read the character by examining their shape in a matrix from and the information is then pass on to the computer.
6.Web Camera:Web is used for video conference or online chatting etc.
7.Scanner:Used to convert data and image into an electronic form that can be storred on the computer.
Output Device:The output device are those devices through which we get results or information on the computer.Most computer data output that is meant for human is in the form of audio or video.
Output Devices:
1.Monitor:The monitor is provides along with computer to view the display results.
2.Printer:Printer is most iportant output device which is used to print the information on the paper.
3.Plotter:Use a pencil,marker or other writing tool for making drawings or vector graphics.
4.Speaker:Speaker is an also of output device.That receive sound in form of electronic current.
Types of Computer:There are different types of computers with respect to size,speed,storage capacity and cost.
1.Micro Computer:Small in size and less cost.It is also called personal computer.
Example:Commondore 64,IBMPC..
#Desktop Computer:Designed to fit comfortably on top of desks.
#Laptop Computer:Small size,can be placed on the Lap.
#Tablet Computers:Smaller and lighter than laptop.
2.Mini Computer:Biger than micro computer.Capable to support 4 to 200 users.
Example:PDP-8
3.Mainframe Computer:Very powerful,more than 100 users can use this computer.
Example:IBMZ series,PDP-10.
4.Super Computers:Most powerful computers with huge processing speed.
Example:CRAY-1,CARY-2.
Computer plays vital role to change our world.Nowadays we cann't imagine our life without computers
Hope everyone will like my blog and don't forget share to your comment till then good bye
Well explained. Very nice writing...keep it up :-)
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