Input device is the device which we use to enter data into the computer. Some devices are given below -
1. Mouse- is a pointing device that rolls on the flat surface. it functions by detecting two-dimensional motion relative to its supporting surface. Optical Mouse, Laser Mouse, Mechanical Mouse are types of mouse.
2. Keyboard- is an arrangement of buttons or keys and is used by pressing a combination of keys simultaneously.
3. Joystick- is often used for plying games.Joystick is also a pointing device like the mouse.It consists of a stick that pivots on a spherical ball on its base. As the stick moves, the angle and direction is recorded and the cursor on the screen also moves accordingly.
4. Trackball- A trackball is the pointing device used just like a mouse.The user roll the ball with the finger directly to move a cursor.
5. Microphone- is used to enter data as voice, sound or audio.
6. Touch Screen- is used to enter data by touching screen.
7. Light Pen ( Laser Pen)-looks like a pen and is connected to the graphic devices.
8. Barcode Reader- is a machine- readable representation of information in the form of strips of dark and light ink.
9. Digital Camera- is used to take video or photographs digitally as input.
10. Scanner- is used to optically scan pictures, printed text, handwriting, directly into the computer as input.
11. Optical Character Recognizer- OCR uses a light source to read the characters and then convert them to electrical pulses.
12. Magnetic Ink Character Recognizer- is a character recognition technology mainly used by the banking industry for the processing of cheques and drafts.
13. Optical Mark Recognizer- is the process of capturing data made by dark and light marks on specific positions.