Job interview questions on basic computer technology and internet part2. Input output devices are usually called io devices. A number of input output devices are used with many types of microcomputers. Pay special attention to devices with an orange background, you need to be able to describe exactly how they work. Digitizer can convert a signal from the television or camera into a series of numbers that could be stored in a. If a device is putting data into the computer in the form of text, sound, images, button presses etc. Input and output devices 3 lecture outline output devices visual displays audio output tactile and haptic output input devices discrete event devices continuous event devices combination devices speech input the first part of the lecture will describe a number of output devices that stimulate the.
Keyboards allow a computer user to input letters, numbers, and other symbols into a computer uses an arrangement of buttons or keys. Speaker act output device and microphone act as input. Input devices accept data and instructions from the user. It only takes the information given by the input devices and sends the result to the output devices. An input device is any hardware component that allows a user to enter data and instructions into a computer. Computer science input and output devices starter task.
It forms images from tiny dots, called pixels that are. Here we are providing sample questions in computer fundamentals. Identify your body parts that can be compared to computer parts. Monitor led, lcd, crt etc printers all types plotters. About input and output devices some examples of input and output devices lesson 2 input and output devices input devices allow us to send information to the computer. Pdf computer input and output devices ingamule siraji. When computers were introduced into wide usage after world war ii, they revolutionized the way modern societies function. Three commonly used output devices are a printer, a monitor and speakers. How do we tell what is an input and what is an output device. Devices input and output unit 4 input output devices. Input devices convert the users actions and analog data sound, graphics, pictures into. Computer science input and output devices starter task pupils need to fill in the gaps by naming input and output devices that fit. Speakers is an output audio information to a user as speech, music or sound effects.
Output devices monitor features display resolution the resolution of a monitor indicates how densely packed the pixels are. Output devices device that a computer sends data or instructions to contents. Without io devices, a user cannot communicate with the computer. Input and output devices allow the computer system to interact with the outside world by moving data into and out of the computer system. Keyboard keyboard is the most common and very popular input device which helps in inputting. Input devices output devices keyboard mouse joystick scanner light pen touch screen monitor lcd printer plotter ii. Difference between input devices and output devices.
Both of them have different functions yet similar to each. List of input devices, output devices and both input. Now a day computer is one of the most important field for every examinations. Output devices are pieces of hardware that are used to display or output data. Applying an electrical current to the paper flips the balls to make the pattern of a picture and an image is displayed. It will be useful for all sbiibpslic exams and other competitive exams. The devices which are used to display the results or information are called output devices.
Input and output devices bangladesh open university. Play the magician hat game and identify the input and output in it. Digitizer digitizer is an input device which converts analog information into digital form. See below for customer comments view the errata see below for the reason for this book. When the computer gives the printout, it is the output. Peripheral device, also known as peripheral, computer peripheral, input output device, or input output device, any of various devices including sensors used to enter information and instructions into a computer for storage or processing and to deliver the processed data to a human operator or, in some cases, a machine controlled by the computer. The sensitivity indicates how much the output of an instrument system or system element changes when the quantity being measured changes by a given amount, that is, the ratio ouput input. Nov, 2018 an output device can receive data from another device and generate output with that data, but it cannot send data to another device.
Complete the worksheets after reading the powerpoint above. Keyboards allow a computer user to input letters, numbers, and other symbols into a computer. The settling time is the time taken forthe output to settle to within some percentage, such as 2%, of the steadystate value. You can view the output on the monitor or you can print it on a paper using a printer. In general, the more pixels often expressed in dots per inch, the sharper the image. Often converts the data into a human readable form. Mcqs on input and output devices gk objective question answer exam question answer for competitive exam of govt jobs. Computer input and output devices research article from world of invention.
Try these tasks and activities to enhance your section 2. It also can acquire respective media data as input sent to a computer or send computer data to storage media as storage output. Jul, 2015 input and output devices of computer duration. The input devices include the mouse, keyboard,microphone e. An output device is an electromechanical device which accepts data from a computer and translates them into a human acceptable form.
The material processed by a computer, however, must still be entered. Fax machine know more about all in detail, click here input output devices. Since the whole device is not moved, a track ball requires less space than a mouse. Monitor receives data from a computer output and displays that information as text and images for users to view. Input devices it is an electromechanical device that can be used to enter data and instructions to the computer. Input devices input is any data or instructions entered into the memory of a computer. Output device can produce the final product of machine processing into a form usable by humans. Dear aspirants, welcome to online computer quiz in. Input devices pointing devices keyboard optical input devices audio input device video inpu device.
Any device has to be connected to the cpu in orderto receive or send information. Headsets headset consists of speakers and microphone. Assignment of input and output devices linkedin slideshare. Input and output devices school of information technology. An output device is used to send data out of the system. Examples of output devices are printer,monitor, speakers. Primarily, they have allowed for the more efficient processing and storing of vast amounts of information. Pos scanner are hardware devices capable of reading a barcode and printing out the details of the product and or logging that product into a database so a company can easily keep track of its inventory.
Disadvantages people with restricted handwrist movement can find it hard to operate a mouse. Pos scanner are hardware devices capable of reading a barcode and printing out the details of the product andor logging that product into a database so a company can easily keep track of its inventory. Bios acronym for basic inputoutput system, the builtin software that determines what a computer can do without accessing programs from a disk. Input devices keyboard one of the primary input devices used with a computer. They are required to enter data and instructions in a computer so that the computer can.
Many of these are less complex versions of io devices that have been available for larger computer systems. This is the most common output device connected with the computer to display the processed information. For example, just as your brain thinks and allows you to do different activities, cpu is the brain on computer and connects the input and output devices. The data entered through input device can be some text, some graphical image or symbol, sound etc, depending on the form of the raw data the various input devices are available. Input devices in programmable logic controllers tutorial. For example, the speakers of a multimedia computer system are directly connected to a device controller called an audio card such as a soundblaster, which in turn is connected to the.
The following is a list of the most common input devices which are nowadays found in a computer system. Learn about these devices and how theyre becoming integrated into single computer systems. The handout is about the types of computer input and output devices. When i draw using a mouse, it is an input to the computer. Using a computer may seem an easy task because of the tools that are attacked with the device and helps in managing the system properly. We have also included some important questions that are repeatedly asked in previous exams. Input is usually given by clicking the mouse or typing on the keyboard.
Virtually all external devices have buffers, control signals, status signals, and data bits. Exploring and experimenting with output devices for childrens crafts. Bios acronym for basic input output system, the builtin software that determines what a computer can do without accessing programs from a disk. Peripheral device, also known as peripheral, computer peripheral,inputoutput device, or inputoutput device, any of various devices including sensors used to enter information and instructions into a computer for storage or processing and to deliver the processed data to a human operator or, in some cases, a machine controlled by the computer.
Input and output devices input devices allow us to send information to the computer. Following are few of the important output devices which are used in a computer. The keyboard looks very similar to the keyboards of electric typewriters, with some additional keys. Track ball is an input device that is mostly used in notebook or laptop computer, instead of a mouse. Research computer input and output devices world of invention. Computer input and output devices fun learning computer for kids duration. 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. This is a ball which is half inserted and by moving fingers on ball, pointer can be moved. Jan 05, 2017 the devices which are used to display the results or information are called output devices. A sheet of paper can be used to both record ideas input and display them output. The sensitivity indicates how much the output of an instrument system or system element changes when the quantity being measured changes by a. So in order to stop me from playing games during my study time my mother would take the mouse away and thought i wont be able to use the computer. Monitor led, lcd, crt etc printers all types lcd projection panels. It forms images from tiny dots, called pixels that are arranged in a rectangular form.
What is the difference between an input and output device. Inputoutput devices constitute a major part of a computer system. Input devices in programmable logic controllers tutorial 14. Pointing devices a pointing device, or sometimes called a pointing tool, is a hardware input device that allows the user to. These input output devices are also known as peripherals since they surround the cpu and memory of a computer system. It is use in many devices such as phones, televisions, music, centres, computers and in headphones inkjet printer. The user sees the result after processing of data by the computer through output devices. To interact with your computer, you need input devices. The distinction between output devices and input devices becomes even more blurred in the real world. Monitors graphic plotter printer monitors monitors, commonly called as visual display unit vdu, are the main output device of a computer.
The most common are a keyboard and a mouse, but there are other devices for more specialized tasks. See below for customer comments view the errata see below for the reason for this book this book is volume 4 of the series, fysos. Inputoutput devices alona sorin seminar in computer science 236801 typewriter 9qwerty, christopher sholes 952% q w e r t y u i o p 32% a s d f g h j k l. Section 2 input and output devices an input device is any hardware device that sends data to the computer, without any input devices, a computer would only be a display device and not allow users to interact with it, much like a tv. This transformation is performed by input interface. 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. Dec 29, 2016 an input devices converts the data and instructions into binary form that computer can understand. Input and output devices 2 goals provide practical introduction to the hardware required for virtual environment and 3d interaction examine common and state of the art io devices advantages and disadvantages discuss how different io devices affect interface design. Output generated by output device classified into two types. However, there are dozens of other devices that can also be used to input data into the computer. Any data or instruction entered into the computer is known as input. An inputoutput io device is a hardware device that has the ability to accept inputted, outputted or other processed data. Generally input devices are manual or direct data entry devices.
But when it comes to know about them and how they work, such devices are categorized as input and output devices. Process doesnt need to distinguish between input coming from terminal, the network, a le or another process. They are directly connected to an electronic module inside the systems unit called a device controller. The devices which are used to input the data and the programs in the computer are known as input devices. Monitor and the printer are the commonly used output devices. Research computer input and output devices world of. Output devices an output device is any hardware component that conveys information to one or more people. Electronic paper is made up of tiny plastic balls that have different colours on each side black and white. Input devices a keyboard it is a text base input device that allows the user to input alphabets, numbers and other. Input and output devices introduction the unit 4 presents the information of input and output devices.
For example, the speakers of a multimedia computer system are directly connected to a device controller called an audio card such as a soundblaster, which in turn is connected to the rest. An input device helps you to communicate with the computer. External devices are not connected directly to the system bus because they have a wide range of control logics, as well as data transfer speeds and formats. List of input devices, output devices and both input output. Facsimile fax it has scanner to scan the document and also. Most modern monitors can display 1024 by 768 pixels, the svga standard. Some commonly used input output devices are listed in table below. Mar 05, 2016 input and output devices input and output devices with examples what are output devices the devices to which the computer writes data. Mouse enable rapid navigation through applications and the internet. An input devices converts the data and instructions into binary form that computer can understand. A track ball comes in various shapes like a ball, a button and a square. Here i am going to share you about list of basic input devices, output devices and both inputoutput devices. Ideally have the same interface to all devices device independence. In my last post i have shared about the following job recruitment questions on basic computer technology and internetjob recruitment questions on basic computer technology and internet part1.
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