Those devices which are directly connected to the CPU are called Peripheral Devices.
Input Devices:
Those devices which take data from user to computer are called input devices.
Or Those devices which provide the first communication from a user to a computer are called input devices.
Or Those devices which provide the first communication from a user to a computer are called input devices.
Purpose:
The purpose is to give data to computers.
Devices:
Following are the devices:
1. Mouse:
The mouse is a small peripheral for moving an eraser (pointer) around the video screen as opposed to using the function keys and cursor control keys. There are 2 types of Mice. One is a Mechanical Mouse that has a small plastic ball and a hard rubber ball. Another is the optical mouse which has a photocell that pickup reflection from a special optical pad.
2. Keyboard:
Data can be typed into a computer on a keyboard. It has letters, numbers, and special characters.
3. Scanner:
This input device works like a photo state machine but the difference is that it gives soft copy rather than hard copy.
4. Joy Stick:
Joy Stick is a device that enables you to move cursor words, lines, pages, objects, and pictures from one point to another point.
Output Devices:
That device provides results/output from the computer to use.
Or Output devices provide second communication between computer and user.
Purpose:
The purpose is to provide/show results to the user.
Devices:
Following are the devices which are associated to show results to the user.
Also called a visual display unit, it shows the result in the form of a soft copy.
2. Speaker:
This output device shows results in audio form, it is an additional device.
3. Printer:
Output device which shows the result in the form of a hard copy.
Types of printers:
Impact character printer, wheel printer, Band printer, Laser printer.
4. Plotter:
This output device is associated to show results in the form of graphics and designs. Plotters are used to give a very neat and best-quality graphic design.
Input-Output Devices:
That device performs both input and output functions.
Or That devices perform a dual function.
E.g Touch Screen. And Fax Machine.
Purpose:
Whenever we want to use single devices as input and output devices.
The purpose is to give data to computers.
Devices:
Following are the devices:
- Mouse
- Keyboard
- Scanner
- Digital Cameras
- Joy Stick
The mouse is a small peripheral for moving an eraser (pointer) around the video screen as opposed to using the function keys and cursor control keys. There are 2 types of Mice. One is a Mechanical Mouse that has a small plastic ball and a hard rubber ball. Another is the optical mouse which has a photocell that pickup reflection from a special optical pad.
2. Keyboard:
Data can be typed into a computer on a keyboard. It has letters, numbers, and special characters.
3. Scanner:
This input device works like a photo state machine but the difference is that it gives soft copy rather than hard copy.
4. Joy Stick:
Joy Stick is a device that enables you to move cursor words, lines, pages, objects, and pictures from one point to another point.
Output Devices:
That device provides results/output from the computer to use.
Or Output devices provide second communication between computer and user.
Purpose:
The purpose is to provide/show results to the user.
Devices:
Following are the devices which are associated to show results to the user.
- Speaker
- Printer
- Plotter
- Monitor
1. Monitors:
2. Speaker:
This output device shows results in audio form, it is an additional device.
3. Printer:
Output device which shows the result in the form of a hard copy.
Types of printers:
Impact character printer, wheel printer, Band printer, Laser printer.
4. Plotter:
This output device is associated to show results in the form of graphics and designs. Plotters are used to give a very neat and best-quality graphic design.
Input-Output Devices:
That device performs both input and output functions.
Or That devices perform a dual function.
E.g Touch Screen. And Fax Machine.
Purpose:
Whenever we want to use single devices as input and output devices.
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