Today We learn about Computer Input, output and storage devices Input and output devices input and output devices with examples output devices name
Input devices
Some input devices are as follows- Keyboard, Mouse, Joy Stick, Light Pen, OCR, OMR, MICR, BCR, Image Scanner, Mike, Track ball, Touch Screen, Camera anfit
1- Keyboard- It is called primary input device, through this both data and instructions can be given to the computer. Keyboard keys are arranged in different groups.
(a) Alpha numeric keyboard- It has both alphabet and numeric keys. (b) Numeric keypad It has only number keys.
(c) Function keys There are function keys on the keyboard from F1 to F12. Their work is different in every application.
(d) Cursor movement key- With the help of these keys, the cursor is moved on the computer screen.
can be moved. Example-1.J, PgUp PgDn, Home, End
(e) Control keys- Short cut keys are made by using these keys with different keys. Example Ctrl & Alt 2- Mouse – This input device is used in GUI environment. instructed by
There are two types of mouse
(1) IBM Mouse- Two button mouse
(2) Microsoft Mouse – Three-button mouse Examples of some types of mouse
- Scroll mouse – The mouse in which a rubber ball is attached at the bottom. B. Optical mouse- In which the light is lit and a sensor is installed.
- Wireless mouse Wireless mouse
- USB Mouse – which is called the computer’s U.S. B (Universal Serial Bus) is installed in the socket, a single mouse can be installed in all the USB ports of the computer.
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(3) CU- Its function controls all the functions of the computer. (4) Main memory- In this the work of temporary storage is done.
(5) ALU (Arithmetic Logical Unit) – All mathematical and logical work is done in this.
(6) Auxiliary (Secondary) memory- It is used for permanent storage. , CPU (Central Processing Unit)- CU, ALU of main memory a reme CPU. All the processing takes place within this.
Example of some input devices
Some of the input devices are Keyboard, Mouse, Joy Stick, Light Pen, OCR, OMR, MICR, BCR, Image Scanner, Mike, Track ball, Touch Screen, Camera aufe
1- Keyboard- It is called primary input device, through this both data and instructions can be given to the computer. Keyboard keys are arranged in different groups.
(a) Alpha numeric keyboard- It has both alphabet and numeric keys. (b) Numeric keypad It has only number keys.
(c) Function keys There are function keys from F1 to F12 on the keyboard. Their work is different in every application.
(d) Cursor movement key- With the help of these keys the cursor can be moved on the computer screen. Example 1.1. PgUp, PgDn, Home, End (e) Control keys- Using these keys with different keys made short cut keys
She goes. Example Ctrl & Alt 2. Mouse – This input device is used in GUI environment. instructed by
It is known that there are two types of mouse-
(1) IBM Mouse- Two button mouse
(2) Microsoft Mouse – Three-button mouse
Examples of some types of mouse
- Scroll mouse- The mouse in which a rubber ball is attached at the bottom.
- Optical mouse- In which the light is lit and a sensor is installed.
- Wireless mouse Wireless mouse
- USB Mouse – which is called the computer’s U.S. B (Universal Serial Bus) socket. Put a mouse in all the USB ports of the computer . Chemical Mouse is not used for Windows OS.
3- Light Pen – There is a special type of pen, through which some 4 Joy Stick on the computer monitor – it is used especially for playing video games. it on a base
There is a handle, which when moved, also moves the object on the screen.
5- Scanner- By such a device the information is recognized by scanning and then on it
goes. It is of the following types. A) OMR (Optical Mark Recognizer/Reader) – It is used for objective (multiple choice)
The exam is done to check the sheet. This sheet is called OMR Shect and fills the round or square marks made on this sheet with a pen or pencil and marks the information. B) OCR (Optical Character Recognizer/ Reader) – It can be used for any written text
To present the read clerk in an editable form, in which the text does not have to be typed.
- C) MICR (Magnetic Ink Character Recognizer/Reader) – gewater Financial
It is used to read the information written from Magnetic Ink in the organization (Bank etc.). In the bank draft, the case number is written with this ink. D) BCR (Bar Code Reader) – This device is used to read the bar code marked on the goods. Price Formation Date on Goods, Expiry Date etc in the form of Bar Code
- E) Image Scanner- By this, any information is read and converted into an image. Like in sending mail by scanning a mark sheet or photo.
6- Mike- By this the audio file is created by capturing (recording) the voice. This audio is in digital form. 7- Camera- Image is captured by this and it is converted into digital form.
There are two types of camera (a) Webcam – It is used only by putting it in the computer. It was used in video chatting Is.
(B) Digital camera – It can be used separately or by attaching it to the computer. its screen
Measured in resolution.megapixel. 8- Touch screen- This is a special type of display unit (Monitor) which is given input by touching.
can go. It is used in public places. Like bank’s ATM 9. Track ball- In this a ball is kept on a base, which can be rolled by hand to move the pointer on the screen.
(Visual Display Unit) is screwy.
There is a copy.
A device information is printed information.
- Projector- Information is displayed through this device. Type
It is an Overhead Projector- It was used a decade ago to show the information marked on the plastic (Transpareney sheet).
Projector – nowadays it is used by connecting to the computer
Has been shown to someone. • At the time the printing quality of the printer is not good, the graphics of this device was used for printing. These are of two types a- bed plotter
Drum Plotter
- Audio is output by the speaker. speaker COM (Computer Microfilm) by converting sound card digital audio into analog
is printed on the film.
The code which is used to operate the computer and get the work done as per your requirement.
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