Write a short note on input and output devices with examples explain
Input and output devices pdf
Examples involving indirect input include the mouse and trackball. What is computer? Direct memory access[ edit ] Direct memory access DMA is a means for devices to transfer large chunks of data to and from memory independently of the CPU. Difference Between Input and Output Devices Definition Input devices are hardware components that are used to provide data and control signals to a computer. The user spins the ball with fingers to move the pointer on the screen. Monitors come in various sizes and resolutions. Webcam - Receives images generated by whatever it is pointed at input and sends those images to a computer. Printers are of different types. After processing the raw facts called data , it produces useful information for the user. This device works like a Xerox machine.
Reference: 1. The first headphones were invented in for U.
Keyboard It is the most commonly used input device. Printed output is also called Hard Copy output because unlike monitor, this output can be preserved even if the computer is switched off.
Functions of output devices
Monitor and the printer are the commonly used output devices. They connect via the computer line out, or to the speakers. Movements of the pointing device are echoed on the screen by movements of the pointer , creating a simple, intuitive way to navigate a computer's graphical user interface GUI. The basic unit of each image is a pixel. What are Output Devices Output devices are the components that take the data from the computer. This type of mouse is more accurate and reliable than the traditional mouse. Difference Between Input and Output Devices Definition Input devices are hardware components that are used to provide data and control signals to a computer. There are two types of printers called impact and non-impact printers. Input Devices The devices which are used to give data and instructions to the computer are called Input Devices.
Output Device can produce the final product of machine processing into a form usable by humans. Examples involving indirect input include the mouse and trackball. Most of the latest mouses, these days, include a wheel in the middle of two buttons that help us to scroll through documents more easily.
Examples of output devices include the following.
It is used to enter data and instructions directly into the computer. While playing the games on the computer, the user needs to move the objects quickly on the screen.
The interface must have necessary logic to interpret the device address generated by the processor.
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