Input devices.ppt
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This document discusses different types of computer graphics input devices. It divides input devices into logical and physical categories. Logical input devices are categorized based on the type of data they transmit and include locator devices that input coordinate positions, string devices that input text, and valuator devices that input scalar values. Common examples of each type are also provided.
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Input Devices
Logical Input Devices
Categorized based on functional
characteristics.
Each device transmits a particular kind of
data.
The different types of data are called input
primitives.
Physical Input Devices
Categorized based on the physical machine.](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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This document provides an overview of computer hardware and various input devices. It begins with definitions of computer hardware as the physical components that enable computer software to run. It then lists and describes several common input devices including keyboard, mouse, joysticks, MICR, OCR, OMR, and light pen. For each device type, it provides details on what it is and how it is used to input instructions and data into the computer system. The document is a presentation on computer applications in business that was given by Md. Towfiqur Rahman on December 20, 2016.
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Input devices allow users to communicate and send data and instructions to computers for processing. Some common input devices include keyboards, mice, joysticks, and scanners. Keyboards contain letters, numbers, and symbols and are used like a typewriter. Mice are used to control the computer by connecting via cable. Joysticks are input devices mostly used for game applications. Scanners directly enter information into computer memory by working like a photocopier.
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This document discusses various input and output devices for computers. It describes keyboards, mice, scanners, trackballs, light pens, and bar code readers as common input devices. Keyboards allow text entry and have letter, number, function, and control keys. Mice are pointing devices that control cursor movement. Scanners convert printed text and images into digital format. Trackballs and light pens provide alternative means for cursor control. Bar code readers convert bar codes into data. For output, monitors display information and come in CRT and LCD varieties. Printers produce hard copies and are classified as impact or non-impact. Speakers output sound and projectors display computer images on large surfaces.
Input
The document defines and provides examples of different types of input devices that allow humans to input data and instructions into computers. It discusses keyboards, pointing devices like mice and touchscreens, scanning devices, image capturing devices, and audio input devices. These input hardware translate actions like typing, clicking, writing, and sounds into a format that computer systems can process as input. Keyboards specifically are described as converting text into electrical signals, and various keyboard styles like traditional, ergonomic, wireless, and virtual keyboards are outlined.
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The document discusses input and output devices for computers. It provides examples of common input devices like keyboards, mice, scanners, and touch screens. It also provides examples of output devices like monitors, printers, and speakers. The document contains detailed descriptions and images of each device's purpose and function. It explains how input devices provide data to computers and output devices communicate data from computers to users.
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The document discusses input devices for computers. It defines input devices as hardware components used to enter data, programs, commands, and responses into a computer. Input devices are classified as either manual or automated. Manual devices require physical operation by the user, such as a mouse, keyboard, or scanner. Automated devices capture and enter data directly without user intervention, including barcode readers, magnetic ink character readers, optical mark readers, and optical character recognition software. The document provides examples and descriptions of common manual and automated input devices.
Input output devices
Input devices bring information into a computer system and allow users to communicate with it. Common input devices include keyboards, mice, scanners, digital cameras, microphones, and touch screens. Output devices display or present information from the computer to users. Common output devices are monitors, printers, speakers, and plotters, which allow users to see, hear, and print computer data and graphics. Together, input and output devices enable two-way interaction between users and computer systems.
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This document discusses different types of input devices used in computer graphics including locators, strings, valuators, choices, and picks. It describes physical devices like the keyboard, mouse, joystick, and tablet. It also covers 3D interaction devices for virtual reality. The document explains how to program mouse, keyboard, and window events using callbacks in OpenGL. Input devices send input primitives to the computer which are then processed through event-driven programming.
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Input devices allow users to communicate and send data and instructions to computers for processing. Some common input devices include keyboards, mice, joysticks, and scanners. Keyboards contain letters, numbers, and symbols and are used like a typewriter. Mice are used to control the computer by connecting via cable. Joysticks are input devices mostly used for game applications. Scanners directly enter information into computer memory by working like a photocopier.
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This document discusses various input and output devices for computers. It describes keyboards, mice, scanners, trackballs, light pens, and bar code readers as common input devices. Keyboards allow text entry and have letter, number, function, and control keys. Mice are pointing devices that control cursor movement. Scanners convert printed text and images into digital format. Trackballs and light pens provide alternative means for cursor control. Bar code readers convert bar codes into data. For output, monitors display information and come in CRT and LCD varieties. Printers produce hard copies and are classified as impact or non-impact. Speakers output sound and projectors display computer images on large surfaces.
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The document defines and provides examples of different types of input devices that allow humans to input data and instructions into computers. It discusses keyboards, pointing devices like mice and touchscreens, scanning devices, image capturing devices, and audio input devices. These input hardware translate actions like typing, clicking, writing, and sounds into a format that computer systems can process as input. Keyboards specifically are described as converting text into electrical signals, and various keyboard styles like traditional, ergonomic, wireless, and virtual keyboards are outlined.
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The document discusses input and output devices for computers. It provides examples of common input devices like keyboards, mice, scanners, and touch screens. It also provides examples of output devices like monitors, printers, and speakers. The document contains detailed descriptions and images of each device's purpose and function. It explains how input devices provide data to computers and output devices communicate data from computers to users.
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The document discusses input devices for computers. It defines input devices as hardware components used to enter data, programs, commands, and responses into a computer. Input devices are classified as either manual or automated. Manual devices require physical operation by the user, such as a mouse, keyboard, or scanner. Automated devices capture and enter data directly without user intervention, including barcode readers, magnetic ink character readers, optical mark readers, and optical character recognition software. The document provides examples and descriptions of common manual and automated input devices.
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Input devices bring information into a computer system and allow users to communicate with it. Common input devices include keyboards, mice, scanners, digital cameras, microphones, and touch screens. Output devices display or present information from the computer to users. Common output devices are monitors, printers, speakers, and plotters, which allow users to see, hear, and print computer data and graphics. Together, input and output devices enable two-way interaction between users and computer systems.
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The document discusses various common computer input devices. It describes graphics tablets, webcams, electronic whiteboards, pen input, barcode readers, microphones, joysticks, mice, keyboards and scanners. It provides details on how each device works and what it is used for, such as capturing audio with microphones or reading barcodes with barcode readers. Graphics tablets, pen input, electronic whiteboards and mice are mentioned as devices that allow entering information into a computer using a stylus or by moving a cursor on a screen.
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1. The document discusses various input devices used to enter data and instructions into a computer including keyboards, pointing devices like mice and trackballs, microphones, digital cameras, and scanners.
2. Keyboards are used to enter text and numeric data while pointing devices control the cursor on screen. Microphones input audio and digital cameras take pictures in digital form.
3. Scanners optically read printed images and text and convert them into electronic form for processing on computers.
input devices
The document discusses various computer input and output devices. It describes keyboards as the most common input device, noting they usually have 100 keys in a QWERTY layout. Pointing devices like mice and trackballs are covered, explaining how they control the cursor on screen. Other input devices mentioned include scanners, bar code readers, microphones, and cameras.
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The document introduces input and output devices used in computing. It describes various input devices like keyboards, mice, scanners that allow data to enter a computer. It also covers output devices like printers, monitors, and plotters that allow a computer to display and print data in human-readable form. A variety of technologies are discussed for both inputting data into and outputting results from a computer system.
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The document introduces various input and output devices used in computing. It describes common input devices like keyboards, mice, scanners and touch screens that allow data to enter the computer. It also outlines output devices such as printers, monitors, and plotters that allow the computer to display and print information in human-readable form. The document provides details on the purpose and functioning of different types of both input and output devices.
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Input devices are pieces of computer hardware used to provide data and control signals to computers and other electronic devices. Some common types of input devices include keyboards, mice, joysticks, light pens, trackballs, and scanners. Keyboards are used to input text and commands and are an important output device. Mice detect two-dimensional motion relative to a surface and translate that motion to pointer movement on a display. Joysticks report the angle or direction of a pivoting stick. Light pens are light-sensitive wands used with CRT displays. Trackballs contain sensors to detect the rotation of an exposed ball, similar to an upside-down mouse. Scanners capture images from physical sources for computer display and editing.
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The document discusses various input and output devices used in computer systems. It describes common input devices like the keyboard, mouse, trackball, joystick, dataglove, digitizer, image scanners, lightpen, barcode reader, optical mark reader, and voice systems. It also explains popular output display devices such as monitors with CRT and flat panel displays, as well as printers including dot matrix, laser, and inkjet printers. Lastly, it briefly mentions plotters and their uses.
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This document discusses and classifies other input devices. It describes pens, touch screens, and game controllers as devices for the hand. It also discusses touch screens, bar code readers, image scanners, optical character recognition, and microphones as audiovisual input devices. Pens allow for handwriting input on devices like PDAs and tablets. Touch screens use sensors to allow finger input on screens. Game controllers include joysticks and game pads for computer game input. Bar code readers identify bar codes to input product information into computers. Image scanners and OCR convert images and characters into electronic formats. Microphones input audio, such as for video conferencing.
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This document discusses computer input and output devices. It defines input devices as devices that accept data from the user and lists common input devices like the keyboard, mouse, scanner, and magnetic ink card reader. It then discusses important output devices like computer monitors, printers (impact and non-impact), and describes their functions. The document also provides an overview of computer memory, including cache memory, primary memory, secondary storage, RAM and ROM.
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Input and output devices allow people to enter data into computers and receive processed results. Key input devices include keyboards, pointing devices like mice, scanners, and microphones. Output is delivered through permanent devices like printers and plotters that provide hard copies, and temporary devices like monitors and speech synthesizers that offer immediate visual and audio output. Some action output devices control machines and robotics.
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The document discusses various types of computer input devices, including keyboards, pointing devices like mice and touchpads, touch screens, game controllers, digital cameras, microphones, webcams, scanners, biometric devices, and terminals. It provides details on how each device works and examples of specific devices within each category. The input devices covered allow users to enter text, commands, photos, sound, and other data into computers through physical interaction or digital conversion of real-world items.
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Peripheral devices that allow communication between the computer and outside world are called input/output devices. Input devices supply data and programs to the computer and include keyboards, mice, scanners, microphones. Output devices allow the computer to communicate information to users and include printers, monitors, speakers. Common input devices described are keyboards, mice, scanners, microphones. Common output devices described are printers, monitors, and speakers.
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The document discusses various common input devices for computers. It describes keyboards, mice, trackballs, joysticks, scanners, barcode readers, OCR, and OMR. The keyboard allows data entry by pressing keys and is the most commonly used input device. Mice and trackballs are pointing devices that move the cursor on screen. Scanners convert paper documents into electronic formats. Barcode readers decode numeric data encoded in barcodes. OCR and OMR are scanners that recognize text and marks, respectively, to input information into computers.
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This document discusses various computer input devices including keyboards, mice, joysticks, light pens, trackballs, scanners, digitizers, magnetic ink card readers, optical character readers, bar code readers, optical mark readers, and touch screens. It provides details on the purpose and function of each input device, with the keyboard and mouse being the most common. The keyboard allows text and commands to be entered and contains letter, number, function, control, and special keys. The mouse is a popular pointing device that controls cursor movement and has left and right buttons.
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1. The document discusses various input devices used to enter data and instructions into a computer including keyboards, pointing devices like mice and trackballs, microphones, digital cameras, and scanners.
2. Keyboards are used to enter text and numeric data while pointing devices control the cursor on screen. Microphones input audio and digital cameras take pictures in digital form.
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Input devices are pieces of computer hardware used to provide data and control signals to computers and other electronic devices. Some common types of input devices include keyboards, mice, joysticks, light pens, trackballs, and scanners. Keyboards are used to input text and commands and are an important output device. Mice detect two-dimensional motion relative to a surface and translate that motion to pointer movement on a display. Joysticks report the angle or direction of a pivoting stick. Light pens are light-sensitive wands used with CRT displays. Trackballs contain sensors to detect the rotation of an exposed ball, similar to an upside-down mouse. Scanners capture images from physical sources for computer display and editing.
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- 2. RM [2]-2 Input Devices Logical Input Devices Categorized based on functional characteristics. Each device transmits a particular kind of data. The different types of data are called input primitives. Physical Input Devices Categorized based on the physical machine.
- 3. RM [2]-3 Logical Input Devices Locator Devices Input Primitive: Coordinate position (x,y) Examples: Mouse, Keyboard (Cursor- Position Keys), Tablet(Digitizer), Trackballs, Lightpens. Applications: Interactive drawing and editing, Graph digitizing.
- 5. RM [2]-5 Joystick and Trackball
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