Pdf fingerbased pointing performance on mobile touchscreen. The most common pointing device about which everybody knows is the mouse. An input devices used to control a pointer on the screen is called pointing device. Yesterday, my laptop ran chkdsk on startup and it found and fixed, as i understood the prompt text several problems in the file system. Pdf laser pointers as collaborative pointing devices. Buttons on the mouse can be clicked or doubleclicked to perform tasks, like to select an icon on the screen or to open the selected document.
So dear reader i have provided top expected gk questions from input and output device of computer. A pointer is small symbol that appears on the screen in graphical user interface. When the tip of a light pen is moved over the monitor screen and pen button is. A pointing device is a hardware device that makes it possible for the user to install constant and multidimensional information in the system. Explain what digital cameras are and how they are used today. The touch screen interface can be beneficial to those that have difficulty using other input devices such as a mouse or keyboard. It performs functions like a mouse but it is a stationary device.
For example, using a pointing device you could point at and select an icon from a list of icons. Pdf pointing devices for wearable computers researchgate. A pointing device is a type of input devices that allows a user to interact with a computer by moving a cursor on a monitor to select icons and. Your computer may look slightly different from the illustrations in this section. Comparison of relative versus absolute pointing devices. Pointing devices and keyboard 11 1 pointing devices and fingerprint reader the following sections provide information on the fingerprint reader and the pointing device features of the computer, which vary by model. Sep 19, 2018 keyboards are still the most widely used devices for entering data and text into computer systems. These preferences apply to any pointing device in the system. With a touch screen the user selects items on the screen by touching the surface. A variety of pointing devices are used to move the pointer on the screen. The three main functions of the pointing devices are to point somewhere on the monitor, click and drag. For example, using a pointing device you could point at and select an icon from.
Microsoft windows does not natively support multiple pointing devices controlling independent cursors, and a number of solutions to this have been implemented by us and others. To set pointing device preferences, such as pointer speed, click speed, and mouse trails, select start control panel hardware and sound mouse. Movements of the pointing device are echoed on the screen by movements of the pointer or. It is used to select a displayed menu item or draw pictures on the monitor screen. Most individuals who are blind use standard keyboards, however, braille input devices are available. When multiple users have access to on screen pointing devices such as cursors for interacting with the groupview display, features should be provided to manage access to the cursor and indicate current user. Relative pointing devices, such as the loop pointer developed by hillcrest laboratories, have the advantage that an indirect mapping allows for settable and dynamic gain adjustments. Apr 02, 2012 after chkdsk, all pointing devices have stopped working hi guys. Touchpads and touchscreens use taps and swipes with various numbers of fingers for special actions. Describe the purposes of scanners and readers and list some types of scanners and readers in use today. Yesterday, my laptop ran chkdsk on startup and it found and fixed, as i understood. List several different pointing devices and describe their functions. Pdf we present a survey of pointing devices for wearable.
Now a day computer is one of the most important field for every examinations. Component description 1 touchpad onoff button enablesdisables the touchpad. For most pointing devices, fittss law can be used to predict the speed with which users can point at a higher speed. Pdf a comparison of menu configurations and pointing devices. John grubers on board i fully admit this is not a perfect idea. All of these are relative pointing devices in the sense that one uses them to move the cursor from a starting point to an ending point, and there is no direct mapping between the device and the x, y location on the screen. However, the term mouse is commonly used as a metaphor for devices that move the cursor. Common pointing devices used to control on screen movement include computer mice, touchpads, touch screens, joysticks, graphics tablets, and trackballs.
Jul 27, 2017 an input devices used to control a pointer on the screen is called pointing device. A pointing device is an input interface that allows a user to input spatial data to a computer. Mouse is an input device that is used for controlling the cursor on the computer monitor in order to point and select object or give command on the computer screen. Examples of pointing devices include mice, trackballs, joysticks, touchpads, and light pens. Motion of the pointing device on the table is followed by the movements on the screen. After chkdsk, all pointing devices have stopped working hi guys. A pointing stick is a tiny joystick in the middle of a laptop. The cursor on the screen follows the motion of the mouse. Nov 27, 2018 mcqs on input and output devices gk objective question answer exam question answer for competitive exam of govt jobs. Some of these devices, including the mouse and the joystick, can be added to a computer system according to the needs of a user.
Synaptics pointing device driver is a freeware software app filed under drivers and made available by synaptics for windows. An input device used to control a pointer on the screen is called a pointing device. They are used to move the insertion point, select objects, and click buttons. Reinstall the latest drivers for the touch pad device of your computer. In a graphical user interface, a pointer is a small symbol on the screen, whose location and shape change as a user moves a pointing device. The major pointing device is the mouse for the desktop computer and the touchpad for the laptop, although many road warriors bring along a mouse. Understand the devices that can be used for audio input. Input devices pointing devices light pen a light pen is a computer input device in the form of a lightsensitive wand used in conjunction with a computers crt display. However, there are some other pointing devices as well and now, we will discuss. Getting the right input devices for your computer system can make a world of difference in your computers performance and can improve the quality of your time spent at the screen.
Supporting multiple pointing devices in microsoft windows. The described driver can and should be installed on all mice on a system in order to let applications use a single interface to all available pointing devices. Often used for information terminals in public places e. For these reasons, it was decided to implement the device driver as a. For example, using a pointing device you could point at. Different types of pointing devices are as following. It consists of a photocell and an optical system placed in a small tube. Here we motivate and describe a general solution, and how user applications can use it by means of a. While the most common pointing device by far is the mouse, many more devices have been developed. Relative pointing through using tactile mobile device such as tablets of phones on a large display is a viable interaction technique that we call pad in this paper which permits accurate pointing. However, pointing devices are a better alternative for issuing commands, making choices, and responding to prompts displayed on your video screen. It allows the user to point to displayed objects or draw on the screen in a similar way to a touchscreen but with greater positional accuracy. On screen help provides efficient access to user guides for individuals who are unable to turn pages in books.
Pointing sticks are available on some laptops, and a small number of users prefer trackballs over the mouse. But i do think it would greatly improve the efficiency of text editing on an ipad, and if text editing isnt an essential task for ipad users, i dont understand why apple bothered making the smart keyboard in the first place. Light pen is a pointing device which is similar to a pen. They have concluded that a device using the controlled motion of forearm, wrist, thumb and index finger to point to graphic pat terns on the display screen could. An eye mouse is a multimedia peripheral device in which the users direction of gaze is used to direct the onscreen cursor, instead of the more usual hand. A mouse or trackball will have two or three buttons to click for special actions. Pointing devices a pointing devices is an input devices that allows a user to control a pointer on the screen. The input device that rolls on a desktop and controls the position of the cursor on then on the screen is called a. Nowadays, it is also available as separate inpute device. The ball is rotated or rolled with fingers or palm of the hand to move the pointer on the screen.
A touch screen is an alternative to a separate pointing device. A pointer is a small symbol that appears on the screen in a graphical user interface. 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. Direct pointing devices such as touch screen interfaces prove to be impractical since users would have to get up and walk to the. A device with which you can control the movement of the pointer to select items on a display screen. D created using powtoon free sign up at create animated videos and animated presentations for free. Individuals who are blind cannot access visual material presented on the computer screen or in printed materials. Two finger touchscreen scroll stops working pdf viewer. The contents of the large display appear on the phone screen, which acts as a view finder and is continously updated as the device mo ves. Pointing devices pointing device is an input interface that allows user to control and provide data to the computer using physical gestures by moving a handheld mouse or similar devices. Advantages and disadvantages of nonkeyboard input devices. This paper investigates four commercially available pointing devices and four onscreen menu configurations to assess which are most appropriate for.
Touch screens are used on a variety of devices, such as computer and laptop displays, smartphones, tablets, cash registers. Pointing device article about pointing device by the free. A touch screen is a display device that allows the user to interact with a computer by using their finger or stylus. The use of pointing devices is to control the position of the cursor or pointer on the screen and allow the user to select options displayed on the screen. After chkdsk, all pointing devices have stopped working. Mcq input and output device of computer with answers pdf.
There are many different types of pointing devices that you may encounter when using a computer, but each performs the same main functions which are. This makes touch screen systems very intuitive and simple to use. The pointing accuracy and speed of the dominant index, thumb, and both thumbs have been studied in the context of handheld devices 37,41, 25, 4. Using a pointing device, you can point at or manipulate any object or text on the screen. Oct 16, 20 c in device manager, expand mice and other pointing devices and rightclick the touchpads entry and click on uninstall. When used in conjunction with software such as on screen keyboards, or other assistive technology, they can help make computing resources more available to people that have difficulty using computers. They can be a useful alternative to a mouse or keyboard for navigating a gui graphical user interface.