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Input Devices Of Computer And Their Functions Pdf

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10.1 FUNCTIONS OF INPUT AND OUTPUT DEVICES

The Input Devices are the hardware that is used to transfer transfers input to the computer. The data can be in the form of text, graphics, sound, and text. Output device display data from the memory of the computer. Output can be text, numeric data, line, polygon, and other objects. The most commonly used input device is a keyboard. The data is entered by pressing the set of keys.

These are used to write documents but can be used to navigate user interfaces in lieu of a mouse. The computer is able to register the movement of the mouse and translate it as movement of the cursor on the screen. A mouse also contain buttons that allow the user to select objects, move windows or open applications. Many also include a scrolling wheel to allow for scrolling through long documents or Web pages. Many users prefer a trackball to a mouse, because it involves less wrist movement, reducing repetitivemotion issues.

Inputs are the signals or data received by the system and outputs are the signals or data sent from it. For instance, a keyboard or computer mouse is an input device for a computer, while monitors and printers are output devices. Devices for communication between computers, such as modems and network cards , typically perform both input and output operations. The designation of a device as either input or output depends on perspective. Mice and keyboards take physical movements that the human user outputs and convert them into input signals that a computer can understand; the output from these devices is the computer's input. Similarly, printers and monitors take signals that computers output as input, and they convert these signals into a representation that human users can understand.

10.1 FUNCTIONS OF INPUT AND OUTPUT DEVICES

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Such devices make up the peripheral equipment of modern digital computer systems. Peripherals are commonly divided into three kinds: input devices, output devices, and storage devices which partake of the characteristics of the first two. An input device converts incoming data and instructions into a pattern of electrical signals in binary code that are comprehensible to a digital computer.

Peripheral device

It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout. Forgot Pasword?

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You will see what role each component plays within the computer system. You will also get to understand the features of each component. This section also briefly introduces the different forms of storage devices that we use to hold out data. The motherboard is central to any computer system.

The computer processes the data and then produces. Introduction II. Input Devices a. Keyboard,mouse,joystick,scanners,digital camera, bar code reader, touch Sreeen,Speech input device microphone III. Standard Methods of Input Input device enables you to input information and commands into the computer. The Keyboard One of the first peripherals to be used with a computer and is still the primary input. Basics of Computer :: 1 1 Basics of Computer 1.

While the term computer can apply to almost any device that has a microprocessor in it, most people think of a computer as a device that receives input from the user through a mouse or keyboard, processes it in some fashion and displays the result on a screen. The major storage device of the computer system is the hard disk or Hard drive. A computer has many components, each with their own roles and functions. Hardware are the physical components of a computer like the processor, memory devices, monitor, keyboard etc. Meaning of Computers.

Hardware refers to the physical, tangible computer equipment and devices, which provide support for major functions such as input, processing internal storage, computation and control , output, secondary storage for data and programs , and communication.

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Without any input devices, a computer would only be a display device and not useful where there is a The Function keys or F1 through F12 keys are used.

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