Which is considered a direct entry input device?

The correct answer is: E. All of the above

A direct entry input device is a type of input device that allows the user to input data directly into the computer without the need for a keyboard or mouse. Direct entry input devices include optical scanners, mice, light pens, and digitizers.

• Optical scanners are used to scan images and text into the computer.
• Mice are used to move the cursor on the screen and select items.
• Light pens are used to select items on the screen by pointing at them with the pen.
• Digitizers are used to convert images and drawings into digital data.

Direct entry input devices are often used in applications where speed and accuracy are important, such as in graphic design, engineering, and scientific research.

Here are some additional details about each of the options:

• Optical scanners use light to scan images and text into the computer. The scanner converts the image or text into a digital file that can be stored on the computer or edited using software. Optical scanners are often used to scan documents, photos, and barcodes.
• Mice are small, handheld devices that are used to move the cursor on the screen and select items. The mouse has two buttons and a scroll wheel. The buttons are used to select items and perform actions, and the scroll wheel is used to scroll up and down on the screen. Mice are connected to the computer using a USB cable or a wireless connection.
• Light pens are pen-shaped devices that are used to select items on the screen. The light pen has a light sensor that detects when it is pointed at the screen. When the light pen is pointed at an item on the screen, the computer selects that item. Light pens are often used in applications where speed and accuracy are important, such as in graphic design and engineering.
• Digitizers are devices that are used to convert images and drawings into digital data. The digitizer has a flat surface that the image or drawing is placed on. The digitizer then converts the image or drawing into a digital file that can be stored on the computer or edited using software. Digitizers are often used in applications where accuracy is important, such as in engineering and scientific research.