Definition a computer is a machine that can be programmed to manipulate symbols. The refresh rate for a monitor is measured in hertz hz the standard refresh rate is 75hz, this means that the monitor redraws the display 75 times per second. Memory is an internal storage area in a computer, which is availed to store data and programs either permanently or temporarily. Some commonly used inputoutput devices are listed in table below.
Pointing devices a pointing device, or sometimes called a pointing tool, is a hardware input device that allows the user to. All about adobe pdf file format webopedia reference. Play the magician hat game and identify the input and output in it. Ziavras, department of electrical and computer engineering, new jersey institute of technology, newark, new jersey 07102, u. An input device is any hardware component that allows a user to enter data and instructions into a computer. 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. Examples of input devices include keyboards, mice, scanners, digital cameras and joysticks. An output device is any piece of computer hardware equipment used to communicate the results of data. Explain different types of storage devices perfect computer. The system unit focuses on processing, whereas a variety of peripheral devices facilitate input, output, storage, and communication. Data can be entered into a computer by a number of devices. It can execute a prerecorded list of instructions a program. So dear reader i have provided top expected gk questions from input and output device of computer. Now a day computer is one of the most important field for every examinations.
Types of computer systems computers are often identified by their size and power. Node devices any computer or peripheral that is connected to the network. Mcq input and output device of computer with answers pdf. Input devices pointing devices keyboard optical input devices audio input device video inpu device. The free reader allows you to share your pdf documents with anyone and allow the end user to view or print the document on any system. A computer has two types of devices which help the user to enter data into the. An input device is any peripheral used to provide data and control signals to a.
Various types of input devices can be used with the computer depending upon the type of data you want to enter in the computer, e. Output devices monitor features refresh rate the refresh rate is the number of times in a second that a monitor draws the data. A pointing device is any human interface device that allows a user to input spatial data to a computer. An electronic device that stores, retrieves, and processes data, and can be programmed with instructions. Adobe reader is also available for mobile devices running palm os, pocket pc, or for symbian os. The keyboard looks very similar to the keyboards of electric typewriters, with some additional keys. Following are some of the important input devices which are used in a computer. Major milestones in development of modern day computers development of internet, browser and other internet based applications, games and linux. For desktop or server system, they are available in the adapter form which can be plugged into the available slots of the motherboard. Devices that exist outside the computer case are called external peripherals, or auxiliary components, examples are. Keyboard is the most common and very popular input device which helps to input data to the computer. In computing, an input device is a peripheral piece of computer hardware equipment used to provide data and control signals to an information processing system such as a computer or other information appliance. Also, distributed computer systems can be developed, where several complete computer.
The memory on a computer is stored in data on disks. This is a ball which is half inserted and by moving fingers on ball, pointer can be moved. You can use input devices to enter information and issue commands. Computer networking devices explained with function. Storage devices are also called secondary storage devices backing storage devices external storage devices or auxiliary storage devices. Input devices how to tell it what to do a keyboard and mouse are the standard way to interact with the computer. Input devices as well as output devices are a neccessity in order to ensure that data is entered into a computer to be processed and the results output. Computer memory is broadly divided into two groups and they are.
For example, a printer is an external device that you connect using a cable, while an optical disc drive is typically located inside the computer. Since the whole device is not moved, a track ball requires less space than a mouse. Input, used to interact with, or send data to the computer mouse, keyboards, etc. A hammer presses the wheel against a ribbon, which in turn makes an ink stain in the shape of the character on the paper. Computer hardware is organized according to these basic functions. It can quickly store and retrieve large amounts of data. Nov 16, 2019 an output device is any peripheral that receives data from a computer, usually for display, projection, or physical reproduction. Output devices impact printer daisywheel similar to a ballhead typewriter, this type of printer has a plastic or metal wheel on which the shape of each character stands out in relief. Keyboards allow a computer user to input letters, numbers, and other symbols into a computer uses an arrangement of buttons or keys.
Explain different types of storage devices in computer systems storage devices storage devices are used to store data and instructions permanently. The devices which are used to input the data and the programs in the computer are known as input devices. In the case of mice and touchpads, this is usually achieved by detecting movement across a physical surface. Input devices input device is any peripheral piece of computer hardware equipment to provide data and control signals to an information processing system such as a computer or other information appliance. An input device lets you communicate with a computer. This new class of computers comprises multiprocessors, multicomputers, and vector supercomputers. It processes, stores, and communicates information. 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. They can be used by the computer to create a picture of whatever the camera had been pointed at. The diagrammatic representation of the classification of. Its available for windows, mac, unix, linux, aix, hpux and solaris operating systems. Input devices input is any data or instructions entered into the memory of a computer.
It responds to a specific set of instructions in a welldefined manner. The input devices include the mouse, keyboard,microphone e. Pdf input output storages devices in computers researchgate. It plugs into almost any usb port in your computer and the data is erasable. Input devices keyboard one of the primary input devices used with a computer. A graphic tablet as digitizer is used for doing fine works of drawing and image manipulation applications. Pointing devices are the most commonly used input devices today. It is the future of computer memory storage devices. Input device translate data from form that humans understand to one that the computer can work with.
Below the io chip are a number of usb universal serial bus connections, which in this depiction enable a keyboard and mouse to be attached to the computer. An input device is a piece of computer hardware equipment used to provide. Identify your body parts that can be compared to computer parts. The proliferation of mobile computing devices has dramatically. Wires connect your cpu to your monitor and other devices. A track ball comes in various shapes like a ball, a button and a square. Keywords computer organization, processor, memory hierarchy, peripheral devices, bus. Output device can produce the final product of machine processing into a form usable by humans. Monitors and printers are two of the most commonly used output devices used with a computer. Computer devices information literacy lumen learning. Before the invention of transistors, chips and integrated circuits, electronic devices depended. Other devices include joysticks and game pads used primarily for games. Digitizer is also known as tablet or graphics tablet because it converts graphics and pictorial data into binary inputs.
Various devices that have been used for computations in the past. For example, the image shows an inkjet printer, an output device that can make a hard copy of anything shown on the monitor. Jul 03, 2017 download computer memory ppt pdf presentation. These types of computer systems are discussed in detail in section 3. The layout of the keyboard is like that of traditional typewriter, although there are some additional keys provided for performing additional functions. For laptop or other small size devices, they are available in the pcmcia personal computer memory card international association card form which can be inserted into the pcmcia slot. The questions on this quiz will allow you to assess how much you know about these tools and the study of. Input devices it is an electromechanical device that can be used to enter data and instructions to the computer. Jan 05, 2017 the devices which are used to give data and instructions to the computer are called input devices. At the most basic level, a computer is a device consisting of three pieces. On many modern systems, usb is used for low performance devices such as these. Track ball is an input device that is mostly used in notebook or laptop computer, instead of a mouse. Peertopeer network a network in which resources and files are shared without a centralized management source.
The handout is about the types of computer input and output devices. Most of the emphasis is placed on the logical behavior of these devices, with some emphasis on their physical operation. Mcqs on input and output devices gk objective question answer exam question answer for competitive exam of govt jobs. The following is a list of the most common input devices which are nowadays found in a computer system.
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