Input Devices
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Input Devices
Input Device This is a hardware component of the computer that is used to enter data or instructions into the memory of the computer.
Types of Input Devices Keyboard This is an input device that is made up of keys which are used to enter data or instructions into the computer.
Mouse This is a handheld device that is moved on the surface of a desk or a mouse pad. It is used to click on icons or objects which are located on the computer screen. There are two types namely, optical and mechanical.
Trackball The trackball is a device that has a similar design to the mouse. It has a ball located at its top and is used to move objects on the computer screen or make selections. This is done by rotating the ball with your finger. The trackball is ideally used in areas where there is limited desk space.
Joystick This is a device which is comprised of a vertical lever that is fixed to a base. It is used to move objects on a computer screen. The joystick is used to play computer games.
Touch Pad This is a device that is pressure and direction sensitive. The cursor moves in the direction that the pointer is pressed and moves faster when more pressure is applied. Touch pads can be found in both laptops and desktop computers.
Digital camera A digital camera is a device that allows users to take pictures and store the photographed images digitally instead of on a film. Images can be transferred from the camera to the computer hard disk.
Microphone The microphone is a device that is used to enter speech or sound into the computer.
Optical Scanner/Scanner A scanner is a light sensing input device that reads printed text and graphics and translates the results into a form that can be processed by the computer.
Bar code scanner/reader This is an optical reader that uses laser beams to read bar codes. A bar code is an identification code that is comprised of vertical lines of different widths and numbers. A bar code is unique to a product.
OMR (Optical Mark Reader) The OMR is a device that is used to read marks that are made on a special form in certain places. These marks can either be circles or rectangles.
MICR (Magnetic Ink character Reader) The MICR is a device used to read characters that are written using magnetic ink. The MICR characters are converted in a manner so that the computer can be able to process it. These characters are found on cheques.
Input Device This is a hardware component of the computer that is used to enter data or instructions into the memory of the computer.
Types of Input Devices Keyboard This is an input device that is made up of keys which are used to enter data or instructions into the computer.
Mouse This is a handheld device that is moved on the surface of a desk or a mouse pad. It is used to click on icons or objects which are located on the computer screen. There are two types namely, optical and mechanical.
Trackball The trackball is a device that has a similar design to the mouse. It has a ball located at its top and is used to move objects on the computer screen or make selections. This is done by rotating the ball with your finger. The trackball is ideally used in areas where there is limited desk space.
Joystick This is a device which is comprised of a vertical lever that is fixed to a base. It is used to move objects on a computer screen. The joystick is used to play computer games.
Touch Pad This is a device that is pressure and direction sensitive. The cursor moves in the direction that the pointer is pressed and moves faster when more pressure is applied. Touch pads can be found in both laptops and desktop computers.
Digital camera A digital camera is a device that allows users to take pictures and store the photographed images digitally instead of on a film. Images can be transferred from the camera to the computer hard disk.
Microphone The microphone is a device that is used to enter speech or sound into the computer.
Optical Scanner/Scanner A scanner is a light sensing input device that reads printed text and graphics and translates the results into a form that can be processed by the computer.
Bar code scanner/reader This is an optical reader that uses laser beams to read bar codes. A bar code is an identification code that is comprised of vertical lines of different widths and numbers. A bar code is unique to a product.
OMR (Optical Mark Reader) The OMR is a device that is used to read marks that are made on a special form in certain places. These marks can either be circles or rectangles.
MICR (Magnetic Ink character Reader) The MICR is a device used to read characters that are written using magnetic ink. The MICR characters are converted in a manner so that the computer can be able to process it. These characters are found on cheques.
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