For each input device you have to be able to identify it from an image, explain what it is used for and discuss advantagesdisadvantages. Input devices pointing devices keyboard optical input devices audio input device video inpu device. A comparison of input devices in elemental pointing and dragging tasks i. Computer mouse shown in picture finger on touch screen. Pointing device an input device used to control a pointer on the screen. A trackball is a pointing device consisting of a ball held by a socket containing sensors to detect a rotation of the ball about two axes like an upsidedown mouse with an exposed protruding ball. Pointing devices a pointing device, or sometimes called a pointing tool, is a hardware input device that allows the user to. Pen pressure has been used in different ways, for example, to activate a. Tracker balls are often used by people with limited movement disabled or by the very young since they are easier to use than a mouse.
Pointing devices are the most commonly used input devices today. A common input device is a pointing device, which controls the pointer on the screen. Generally it has two buttons called left and right button and a wheel is present between the buttons. In the case of mice and touchpads, this is usually achieved by detecting movement across a physical surface. Input devices a keyboard it is a text base input device that allows the user to. This chapter will show you how inputoutput devices work. Microphone is an input device, which takes voice as input.
The devices of this category completely eliminate manual input of data. Mouse, joystick, trackball,light pen or stylus, track pod, track point, touch screen, touch pod. Generally input devices are manual or direct data entry devices. Pdf pointing devices for wearable computers researchgate. A pointer is a small symbol that appears on the screen in a graphical user interface. Different pointing devices have different degrees of freedom dof.
The picture shows a logitech trackball mouse, which is an example of an input device the most commonly used or primary input devices on a computer are the keyboard and mouse. An input device used to control a pointer on the screen is called a pointing device. A comparison of input devices in elemental pointing and. Input and output devices bangladesh open university. A pointing device is a hardware device that makes it possible for the user to install constant and multidimensional information in the system. Learn about the various types of pointing devices below. Data about which direction the ball is spun is passed to the computer. Some commonly used inputoutput devices are listed in table below. The monitor displays the video and graphics information generated by the computer through the video card. Consider using a different input device to reduce repetitive arm motions. Input and output devices can also be written as io devices.
Mcq input and output device of computer with answers pdf. Chapter 8 input devices, interaction techniques, and. It is a very famous cursorcontrol device having a small palm size box with a round ball at its base which senses the movement of mouse and sends corresponding signals to cpu when the mouse buttons are pressed. Devices input and output unit 4 input output devices. A pointing deviceis a hardware input device that allows the user to move the mouse pointer to select items on a display screen. In computing, an input device is a piece of computer hardware equipment used to provide data and control signals to an information processing system such as a computer or information appliance. Setting touchpad preferences to access mouse properties, select start control panel hardware and sound mouse. Disadvantages of using keyboards for data input include it takes a lot of time to practice in order to type quickly and accurately. The three main functions of the pointing devices are to point somewhere on. Keyboards, pointing devices, cameras, scanners and microphones. This pointing device is not moved about like a mouse, instead it has a large ball that the user spins.
Computer input devices following are some of the important input devices which. Below are examples of pointing devices that can be used on a computer. Explain what digital cameras are and how they are used today. Input devices types of keyboard thumbsized keyboard smaller external keyboards have been introduced for devices without a builtin keyboard, such as pdas, and smartphones. It is the next most common type of input device after the keyboard. An input device is any hardware device that sends data to a computer, allowing you to interact with and control it. Input and output devices of a computer system are the devices that connect you to computer. Cad systems and graphical user interfaces gui allow the user to control and provide data to the computer using physical gestures by moving a handheld mouse or similar device across the surface of the physical desktop. An input device can be defined as an electromechanical devices that allows the user to feed information or data into the computer for analysis, storage and give command to the computer. Omr is a special type of optical scanner used to recognize the type of mark. List several different pointing devices and describe their functions. Introduction input and output devices are very important for computers, without them,computers will not be as functional. Following are few of the important input devices which are used in a computer.
So dear reader i have provided top expected gk questions from input and output device of computer. Manual input peripherals, or devices gcserevision, ict. Joystick is also a pointing device, which is used to move the cursor position on. Synaptics pointing device driver download for windows 10 8. A pointing device is an input interface that allows a user to input spatial data to a computer. Now a day computer is one of the most important field for every examinations. A pointing device, or sometimes called a pointing tool, is a hardware input device that allows the user to move the mouse cursor in a computer program or gui operating system. Pointing devices pointing devices and keyboard 4 left touchpad button functions like the left button on an external mouse. The input device that rolls on a desktop and controls the position of the cursor on then on the screen is called a. An input device allows a user to interact with a computer by. In this section we will look at how input devices can be used to get data into a computer system. Learn different types of networks, concepts, architecture and.
Learn about each of the five generations of computers and major technology developments that have led to the computing devices that we use. For example, using a pointing device you could point at and select an icon from a list of icons. An interaction technique is a way of using an input device to enter a particular type of value into the computer such as a pulldown. Keyboard is merely a collection of momentary switches. Understand the devices that can be used for audio input.
From which we input the raw data in the computer system for further processing. Io devices are used to interact with the computer system. What is input device types of input devices computer devices duration. These allow users to interact with devices just by touching the screen. However, there are dozens of other devices that can also be used to input data into the computer. An input device is a piece of hardware that is used to enter data into a computer.
Pointing systems computer users frequently find it easier to point to something on a screen or at an item of text or graphical material they are entering into the computer, a number of devices are available to assist in fulfilling this need. However, unlike laptops, since wearable computers are operated from different body positions under. Using a pointing device, you can point at or manipulate any object or text on the screen. Press the pointing stick in the direction you want to navigate, either left, right, up, or down.
Examples of input devices include keyboards, mouse, scanners, digital cameras, joysticks, and microphones input devices can be categorized based on. Input devices it is an electromechanical device that can be used to enter data and instructions to the computer. Instead of moving the whole mouse around, the user rolls the trackball only, which is on the top or side. It is a very famous cursorcontrol device having a small palm size box with a round ball at its base, which senses the movement of the mouse and sends corresponding signals to the cpu when the mouse buttons are pressed. Small keyboards are also useful where there is a limited workspace. What are the types of categories of input devices answers. Monitors are very similar to televisions but usually display information at a much higher resolution. Input devices output devices keyboard mouse joystick scanner light pen touch screen monitor lcd printer plotter ii. Input devices accept data and instructions from the user. A pointing device is an input interface specifically a human interface device that allows a user to input spatial i. Select start control panel hardware and sound pen and input devices pen options tab. Touch pads and trackballs are also types of pointing device.
Keyboards allow a computer user to input letters, numbers, and other symbols into a computer. To set pointing device preferences such as pointer speed, click speed, and mouse trails, select start control panel hardware and sound mouse. Explain different pointing input devices mouse mouse is an input device used to control motion of pointer on screen. Touch panel displays and pads are now being offered as alternatives to keyboard. Chapter 5 inputoutput devices computer science igcse. Networking fundamentals teaches the building blocks of modern network design. Typing speeds are still very slow when compared with computer speeds.
Input devices let you to transfer data and user command into the computer system. What are different types of input devices with examples. Mouse and tracker ball are examples of a pointing device. There are many different types of input device and each one is suitable for a specific task. These devices are used for automatic data collection. Based on rolling a ball based on touching a surface based on moving stick. A pointing device is any human interface device that allows a user to input spatial data to a computer. One of the primary input devices used with a computer. But later on, with technological advancement, pointing devices were developed and got added in the types of input devices.
Describe the purposes of scanners and readers and list some types of scanners and readers in use today. Different types of pointing devices are as following. Would you like to know about pointing devices, different types of. Pdf we present a survey of pointing devices for wearable. Any hardware component used to enter data, programs, commands, and user responses into a computer scanners and reading devices voice input keyboard pointing device video input digital p. They are often used instead of a mouse on portable computers. Trackballs decrease the distance your shoulder has to travel, which may help reduce. A mouse has two or three buttons called left, right and middle button. Mcqs on input and output devices gk objective question answer exam question answer for competitive exam of govt jobs. The keyboard looks very similar to the keyboards of electric typewriters, with some additional keys. They are divided into two categories 1 manual input devices devices that need human involvement to input data 2 automatic input devices devices that do not need human involvement to input data.
Direct input systems some devices, such as optical mark readers, enable dat to be entered directly, without human intervention. Chapter 4 input and output oakton community college. Light pen track ball graphic tablet magnetic ink card readermicr. Scott mackenzie 1, abigail sellen 2, and william buxton 2 1 ontario institute for studies in education university of toronto toronto, ontario, canada m4s 1v6. These preferences apply to any pointing device in the system.