This document discusses various types of computer input and output hardware devices. It describes common input devices like keyboards, mice, touchscreens, microphones, and scanners. It also covers output devices such as monitors, printers, speakers, and multifunction devices. The document provides details on how different devices work and standards for items like monitor resolution.
some of the graphical input devices. emerging technology also transforms and presents to us various innovative input devices. at present automatic speech recognition is an intelligent input method
These Notes from the class of BS EDUCATION 1st Semester (Spring) Session 2023-2027 Teacher :Ch Naveed Afzal
semester started in march 2023 and end in july 2023
Input Devices-Keyboard, Mouse, Trackball, Joystick, Scanner and Types, Barcode Reader, Voice Recognition, Web Camera, Optical character recognition, Optical Mark recognition, Monitor, Printer and Types, Plotter
some of the graphical input devices. emerging technology also transforms and presents to us various innovative input devices. at present automatic speech recognition is an intelligent input method
These Notes from the class of BS EDUCATION 1st Semester (Spring) Session 2023-2027 Teacher :Ch Naveed Afzal
semester started in march 2023 and end in july 2023
Input Devices-Keyboard, Mouse, Trackball, Joystick, Scanner and Types, Barcode Reader, Voice Recognition, Web Camera, Optical character recognition, Optical Mark recognition, Monitor, Printer and Types, Plotter
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. Such devices make up the peripheral equipment of modern digital computer systems.
Peripherals are commonly divided into three kinds: input devices, output devices, and storage devices (which partake of the characteristics of the first two). An input device converts incoming data and instructions into a pattern of electrical signals in binary code that are comprehensible to a digital computer. An output device reverses the process, translating the digitized signals into a form intelligible to the user. At one time punched-card and paper-tape readers were extensively used for inputting, but these have now been supplanted by more efficient devices.
Computer – Hardware
Hardware represents the physical and tangible components of a computer, i.e. the components that can be seen and touched.
Examples of Hardware are the following −
Input devices − keyboard, mouse, etc.
Output devices − printer, monitor, etc.
Secondary storage devices − Hard disk, CD, DVD, etc.
Internal components − RAM,CPU, motherboard, etc.
INPUT AND OUTPUT DEVICES OF COMPUTER Input Devices A device that can be used to insert data into a computer system is called as input device. It allows people to supply information to computers without any input devices, a computer would only be a display device and not allow users to interact with it, Examples of input devices include keyboards, mouse, scanners, digital cameras and Light pen, joysticks, Touch-screen, OMR, OBR,OCR. Keyboard Most common and very popular input device is keyboard. The keyboard helps in inputting the data to the computer. The layout of the keyboard is like that of traditional typewriter, although there are some additional keys provided for performing some additional functions. Keyboard is of two sizes 84 keys or 101/102 keys, but now 104 keys or 108 keys keyboard is also available for Windows and Internet. Mouse Mouse is most popular Pointing device. It is a very famous cursor-control device. It is a small palm size box with a round ball at its base which senses the movement of mouse and sends corresponding signals to CPU on pressing the buttons. Generally it has two buttons called left and right button and scroll bar is present at the mid. Mouse can be used to control the position of cursor on screen, but it cannot be used to enter text into the computer.
A peripheral device is defined as a computer device, such as a keyboard or printer, that is not part of the essential computer (i.e., the memory and microprocessor). These auxiliary devices are intended to be connected to the computer and used.
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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. Such devices make up the peripheral equipment of modern digital computer systems.
Peripherals are commonly divided into three kinds: input devices, output devices, and storage devices (which partake of the characteristics of the first two). An input device converts incoming data and instructions into a pattern of electrical signals in binary code that are comprehensible to a digital computer. An output device reverses the process, translating the digitized signals into a form intelligible to the user. At one time punched-card and paper-tape readers were extensively used for inputting, but these have now been supplanted by more efficient devices.
Computer – Hardware
Hardware represents the physical and tangible components of a computer, i.e. the components that can be seen and touched.
Examples of Hardware are the following −
Input devices − keyboard, mouse, etc.
Output devices − printer, monitor, etc.
Secondary storage devices − Hard disk, CD, DVD, etc.
Internal components − RAM,CPU, motherboard, etc.
INPUT AND OUTPUT DEVICES OF COMPUTER Input Devices A device that can be used to insert data into a computer system is called as input device. It allows people to supply information to computers without any input devices, a computer would only be a display device and not allow users to interact with it, Examples of input devices include keyboards, mouse, scanners, digital cameras and Light pen, joysticks, Touch-screen, OMR, OBR,OCR. Keyboard Most common and very popular input device is keyboard. The keyboard helps in inputting the data to the computer. The layout of the keyboard is like that of traditional typewriter, although there are some additional keys provided for performing some additional functions. Keyboard is of two sizes 84 keys or 101/102 keys, but now 104 keys or 108 keys keyboard is also available for Windows and Internet. Mouse Mouse is most popular Pointing device. It is a very famous cursor-control device. It is a small palm size box with a round ball at its base which senses the movement of mouse and sends corresponding signals to CPU on pressing the buttons. Generally it has two buttons called left and right button and scroll bar is present at the mid. Mouse can be used to control the position of cursor on screen, but it cannot be used to enter text into the computer.
A peripheral device is defined as a computer device, such as a keyboard or printer, that is not part of the essential computer (i.e., the memory and microprocessor). These auxiliary devices are intended to be connected to the computer and used.
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@ Kindly Follow my Instagram Page to discuss about your mental health problems-
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Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
5. Input Modes
Input devices contain a trigger which can be used to send a signal to the operating
system
Button on mouse
Pressing or releasing a key
When triggered, input devices return information (their measure) to the system
Mouse returns position information
Keyboard returns ASCII code
6. Incremental (Relative) Devices
Devices such as the data tablet return a position directly to the
operating system
Devices such as the mouse, trackball, and joy stick return
incremental inputs (or velocities) to the operating system
Must integrate these inputs to obtain an absolute position
Rotation of cylinders in mouse
Roll of trackball
Difficult to obtain absolute position
Can get variable sensitivity
7. Keyboards
The QWERTY layout is standard on most PCs
Enhanced keyboard features include number,
function, and navigation keys.
7
8. Dvorak Keyboards
Puts the most commonly used keys on “home keys”
Reduces distance of finger stretches
8
10. Mouse
10
A pointing device that fits comfortably under the
palm of your hand
The most widely used pointing device on desktop
Computers
The mouse controls the movement of the pointer,
also called the mouse pointer, on the screen
11. Mechanical Mouse
A rubber or metal ball is on its underside
When the ball rolls in a certain direction, electronic
circuits in the mouse translate the movement of the mouse
into signals the computer understands
A mouse pad provides better traction and protects the
ballfrom a build up of dust and dirt
12. Optical Mouse
Uses devices that emit & sense light to detect the mouse’s movement
Some use optical sensors; others use laser
More precise than a mechanical mouse & does not require cleaning
Slightly more expensive
12
14. Trackball and Space ball
Trackball
It is a pointing device similar to a mouse.
mainly used in notebook or laptop computer, instead of a mouse. This is a ball which
is half inserted, and by changing fingers on the ball, the pointer can be moved.
Spaceball
similar to trackball, but can move in six directions where trackball can move in two directions
only.
movement is recorded by the strain gauge. Strain gauge is applied with pressure. It can be pushed
and pulled in various directions.
The ball has a diameter around 7.5 cm.
The ball is mounted in the base using rollers. One-third of the ball is an inside box, the rest is
outside.
15. Joysticks
pointing device used to change cursor position on
a monitor screen.
Joystick is a stick having a spherical ball as its
both lower and upper ends
lower spherical ball moves in a socket. The
joystick can be changed in all four directions.
function of a joystick is similar to that of the
mouse.
mainly used in Computer Aided Designing (CAD)
and playing computer games.
16. Data Glove
input device essentially a glove worn on the hand that
contains various electronic sensors that monitor the
hand's movements and transform them into a form of
input
applications such as virtual reality and robotics.
Some datagloves enable and to apply fine-motion control.
tactile sensing, allowing the user to seemingly feel a
virtual object
19. Touch Panels
touch panels allow displayed objects or screen
positions to be selected with the touch of a
finger.
A typical application of touch panels is for the
selection of processing options that are
represented with graphical icons.
20. Light Pens
light sensitive pen-like input device
used to select objects directly on the computer screen
.
used for making drawing, graphics and for menu
selection.
Figures and drawings can be made by moving the pen
on computer screen.
21. Digitizers
digitizer is an operator input device
contains a large, smooth board (the appearance is similar
to the mechanical drawing board) & an electronic tracking
device, which can be changed over the surface to follow
existing lines.
The electronic tracking device contains a switch for the
user to record the desire x & y coordinate positions. The
coordinates can be entered into the computer memory or
stored or an off-line storage medium such as magnetic
tape.
One type of digitizer is the graphics tablet
23. Scanning Devices
Copy data from a source
Types of scanners
Optical scanner
Bar code readers
Character and Mark recognition
23
24. Optical Scanners
Copy text or images
Can be displayed, printed, or stored
Types of optical scanners
Flatbed scanner
Source placed on glass surface
Image scanned from below
Portable scanner
Handheld device that slides across
source
24
25. Bar Code Readers
Photoelectric scanner
Read bar codes
Alternating black & white vertical bars
Universal Product Code (UPC)
Seen in grocery stores, retail stores
25
26. Character & Mark Recognition
Magnetic-ink character recognition (MICR)
Reads magnetically encoded characters
Optical-character recognition (OCR)
Reflects light off special preprinted characters
Optical-mark recognition (OMR)
Senses presence or absence of marks
26
27. Image Capturing Devices
Create or capture original images
Digital camera
Image recorded digitally to memory
Digital video cameras
Capture motion
Webcams
Capture images for broadcast on Internet
27
28. Audio-Input Devices
Convert sound into digital format
Voice recognition system
Operate computer by voice command
Dictation
Microphone, sound card, software
Discrete
Continuous
28
29. Voice Recognition Systems Types
Recognize individual words based on sound
Discrete-speech recognition
Cannot distinguish same-sound words
Continuous-speech recognition
Can distinguish same-sound words
Evaluates context of words
29
31. Output
Processed data from a computer
Text, graphics, photos, audio, video
Common output devices
Monitor
Printer
Plotter
Voice
31
32. Monitors
Most frequently used output
device
Size is measured by diagonal
of screen
Common sizes: 15, 17, 19, 21 inches
Clarity is indicated by
resolution
Measured in pixels
More pixels = better clarity
32
33. Monitor Standards
Resolution capabilities indicated by a monitor’s standard
Super Video Graphics Array (SVGA)
Extended Graphics Array (XGA)
Super Extended Graphics Array (SXGA)
Ultra Extended Graphics Array (UXGA)
33
34. Monitor Types
Cathode-Ray Tubes (CRT)
Most common
Flat-panel monitors
Passive-matrix
Active-matrix
eBook readers
Data projectors
High-definition television (HDTV)
34
36. Printers
Produces hard copy output
Ink-jet printer
Sprays droplets of ink
Laser printer
Laser produced images
Thermal printer
Heated element produce image on heat sensitive paper
36
37. Other Printers
Dot-matrix
Series of pins on print head
Inexpensive, not high quality
Chain printer
Used on networks
Plotter
Maps, architectural drawings
High quality, larger sized output
37
38. Audio Output Devices
Translate computer data into understandable sounds
MP3 files
Components
Sound card
Speaker system or headphones
38
39. Combination Input/Output Devices
Devices are combined into one device
Save room
Specialized applications
Fax machine
Multifunctional device
Telephony
Terminals
39
40. Fax Machine
Facsimile transmission machine
Sends and receives images across telephone lines
Fax/modem board
Give computer same capability
40
41. Multifunctional Device
Combines
Scanner
Printer
Fax machine
Copying machine
Cost effective
Saves space
Popular in small offices or home
41
42. Telephony
Uses Internet rather than traditional communication lines
Requires
Internet telephone
Internet
Special service provider
42
43. Terminals
Devices connected to servers
Input and output
Types
Dumb terminal
Intelligent terminal
Network terminal
Internet terminal
43