Resistive and capacitive touchscreens are the two main technologies. Resistive touchscreens detect touch via changes in electrical current between two flexible layers when pressed. Capacitive touchscreens use conductive coatings and detect changes in capacitance from a finger's electrical charge. Advantages of touchscreens include more intuitive interfaces and no need for additional input devices. Multi-touch capabilities and thinner, more accurate screens are areas of ongoing advancement.
Explains about touch screen sensor and its operation with the controller, types of touch sensor and its differentiation, advantages & disadvantages and its applications in day today life.
touch screen technology contains some limitations with it, it is fast, accurate, user friendly and fun to operate .It is being widely accepted. With some modifications, it can completely replace mouse and keyboard completely in the near future.
Explains about touch screen sensor and its operation with the controller, types of touch sensor and its differentiation, advantages & disadvantages and its applications in day today life.
touch screen technology contains some limitations with it, it is fast, accurate, user friendly and fun to operate .It is being widely accepted. With some modifications, it can completely replace mouse and keyboard completely in the near future.
That is touch screen technology as everything (laptop,desktop,mobiles,ATM machine) each and everything can be used by touch.so how it works.Take a tour of uploaded ppt.
This presentation gives a brief insight to the world of Touch Screen Technology. Every common man in the 21st century is bounded by this ground breaking revolution in the digital world, yet only a countable number of them is fully aware of this vast topic in details. This presentation is a small step to enlighten people of the technology which they use in their day to day life.
A touch screen is a computer display screen that is sensitive to human touch, allowing a user to interact with the computer by touching pictures or words on the screen.
In 1971, the first "Touch Sensor" was developed by Doctor Sam Hurst (founder of Elographics) while he was an instructor at the University of Kentucky.
That is touch screen technology as everything (laptop,desktop,mobiles,ATM machine) each and everything can be used by touch.so how it works.Take a tour of uploaded ppt.
This presentation gives a brief insight to the world of Touch Screen Technology. Every common man in the 21st century is bounded by this ground breaking revolution in the digital world, yet only a countable number of them is fully aware of this vast topic in details. This presentation is a small step to enlighten people of the technology which they use in their day to day life.
A touch screen is a computer display screen that is sensitive to human touch, allowing a user to interact with the computer by touching pictures or words on the screen.
In 1971, the first "Touch Sensor" was developed by Doctor Sam Hurst (founder of Elographics) while he was an instructor at the University of Kentucky.
Die digitale Transformation zu managen ist die große Herausforderung von heute. Allzu oft befassen sich Digitalisierungsprojekte zu sehr mit der Technologie.
Unser Ansatz zur wirkungsvollen und nachhaltigen Digitalisierung ist die Entwicklung der kulturellen, sozialen
und natürlich auch technischen Subsysteme von Organisationen.
A touchscreen is an electronic visual display that the user can control through simple or multi-touch gestures by touching the screen with a special stylus/pen and-or one or more fingers.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Slack (or Teams) Automation for Bonterra Impact Management (fka Social Soluti...Jeffrey Haguewood
Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on the notifications, alerts, and approval requests using Slack for Bonterra Impact Management. The solutions covered in this webinar can also be deployed for Microsoft Teams.
Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
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Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
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The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
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All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
3. Introduction
• A touch screen is an electronic visual display that the user can
control through simple or multi-touch gestures by touching the
screen with a special stylus/pen and-or one or more fingers.
• The user can use the touch screen to react to what is displayed
and to control how it is displayed (for example by zooming the
text size).
• The touch screen enables the user to interact directly with what
is displayed, rather than using a mouse, touchpad, or any other
intermediate device.
4. Working
• A touch screen has three main components:
Touch sensor
Touch Controller
Software driver
• The touch screen itself is an input device, so it needs to be
combined with a monitor and a PC to make a complete touch
input system.
5. Touch Sensor
• Each touchscreen uses a different
method to sense touch input. Often
these are a plastic or glass panel placed
under the bezel of the LCD screen.
• A touch screen sensor is a clear glass
panel with a touch responsive surface.
It is placed over a display screen so
that the responsive area of the panel
covers the viewable area of the video
screen.
• The sensor generally has an electrical
current or signal going through it and
touching the screen can cause a signal
change. This change is used to
determine the location of the touch.
6. Touch Controller
• The controller connects between the touch sensor and the PC.
It takes information from the touch sensor and translates it into
information that PC can understand.
• The controller determines what type of interface/connection
will be needed on the PC. Controllers are available that can
connect to a Serial/COM port (PC) or to a USB port.
• MCF227x,PIC 18F452.
Software driver
• The driver allows the touch screen and computer to work
together. It tells the computer's operating system how to
interpret the touch event information that is sent from the
controller.
7. Types of technologies
There are a variety of touch screen technologies that have
different methods of sensing touch
• Resistive touchscreen
• Capacitive touchscreen
• Infrared touchscreen
• Surface acoustic wave (SAW) touchscreen
8. • The resistive touchscreen consists of a flexible top layer made of
Polyethylene (PET) and a rigid bottom layer made of glass.
• Both the layers are coated with a conducting compound called Indium
Tin Oxide (ITO) and then spaced with spacers.
• While the monitor is operational, an electric current flows between the
two layers. When a touch is made, the flexible screen presses down and
touches the bottom layer.
• A change in electrical current is hence detected and the coordinates of
the point of touch is calculated by the controller and parsed into
readable signals for the operating system to react accordingly.
Resistive Touchscreen Technology
9. • When the touch screen is
pressed, contact is made
between the grid on the
glass and the grid on the
film.
• The voltage of the circuit is
measured, and the X and Y
coordinates of the touch
position is calculated based
on the amount of
resistance at the point of
contact.
• This analog voltage is
processed by ADC to create
a digital signal that the
device's controller can use
as an input signal from the
user.
10. • One of the big advantages of resistive touch panels is that
they are relatively inexpensive to make. Another is that you
can use almost anything to create an input signal: finger tip,
fingernail, stylus -- just about anything with a smooth tip.
Resistive touchscreens are of 4 modes
• 4-wire
• 8-wire
• 5 and 7 wire
11. 4-wire
• A 4-wire touch screen is made from two layers, each with a resistive
coating. The bottom layer is rigid, but the top one is flexible. Both layers
are provided with voltage
• The basic idea is to create a voltage divider. Detecting the voltage at the
division point (the touch point) allows for calculating the relative
position of the touch point with respect to the two rails.
• To get the coordinates for a single point, First a voltage is applied across
the x-axis plane, and the contacts for the y-axis plane are allowed to
float.
• The resistive coating on the touch screen creates a voltage gradient
across the plane. If the top layer is pressed, it flexes and makes contact
with the bottom layer.
• The y-axis plane now has a voltage equal to the voltage on the x-axis
plane at the point of contact. The voltage on the y-axis plane can be
measured and used to obtain the x-coordinate.
• The process is repeated again to get the y-coordinate.
12.
13. 8-wire
• An 8-wire touch screen is based on the same basic technology as
a 4-wire touch screen. Again, four wires are used to provide
power at the edges of the touch screen.
• The extra four wires are used to sense the actual voltage applied
at the edges of the touch screen. These sense wires are added to
compensate for offset errors.
• An 8-wire system is more commonly used for larger touch
screens (about twenty centimeters, or eight inches, and up).
• The accuracy of touch point placement degrades as the screen
becomes larger, because the resolution is spread across a bigger
distance.
• Therefore, loss of accuracy due to offset error is a bigger
concern. Hence 8-wire is used for greater accuracy.
14. 5-wire and 7-wire
• 5-wire touch screens make some improvements on the older 4-wire
technology. The construction of the panels are similar, but for a 5-wire
touch screen all four bus bars are connected to the lower, non-flexible
layer of the screen.
• The voltage gradients are always applied to the rigid bottom layer.
Because the voltage gradient layer does not come into direct contact
with the user and does not bend. Hence better durability.
• 7-wire touch screens add two additional sense lines to the 5-wire
interface.
• One sense line is used to detect offset on one of the x-axis bus bars,
and the second is used to detect offset on one of the y-axis bus bars.
Again, this helps to increase the accuracy of touch measurements and
reduce the need for calibration.
15. • A capacitive touchscreen panel consists of an insulator such
as glass, coated with a transparent conductor such as indium tin
oxide(ITO).
• As the human body is also an electrical conductor, touching the
surface of the screen results in a distortion of the
screen's electrostatic field, measured as a change in capacitance.
• Capacitive touch gets its name from the electrical distortion that
results in the screen's capacitive field when impressed upon by
body capacitance, or conductor of electric charges.
• This enables capacitive touchscreens to not require any actual
force to be applied to the screen’s surface; at the same time,
capacitive screens typically don't respond to styluses or gloved
hands due to the lack of electrical impulses generated.
Capacitive Touchscreen Technology
16. • Capacitive touchscreen is a
four multi-layer glass. The
two sides of the glass
substrate are coated with
uniform conductive ITO
(indium tin oxide) coating.
• The thickness of 0.0015
millimeter silicon dioxide hard
coating are coated on the
front side of ITO coating layer.
There are electrodes on the
four corners for launching
electric current.
17. • Small amount of voltage is applied
to the electrodes on the four
corners . A human body is an
electric conductor, so when the
screen is touched with a finger, a
slight amount of current is drawn,
creating a voltage drop.
• The current respectively drifts to
the electrodes on the four corners.
Theoretically, the amount of current
that drifts through the four
electrodes should be proportional
to the distance from the touch point
to the four corners.
• The controller precisely calculates
the proportion of the current
passed through the four electrodes
and figures out the X/Y coordinate
of a touch point.
18.
19. Advantages
• Touchscreens improves the human-computer interface and helps
improving the user’s experience.
• Touchscreens provide an easy to understand, intuitive interface
for the human brain.
• Fumbling with a mouse and keyboard isn’t always the easiest
thing to do and touchscreen technology can help as they have
easier hand eye coordination than mice or keyboards
• Touch screens are the fastest pointing devices. No extra work
space is required as with other pointing devices.
20. Multi-touch screens
• multi-touch refers to the ability of a surface to
recognize the presence of more than one or more
than two points of contact with the surface.
• Capacitive display continue to develop thinner and
more accurate touchscreens, with touchscreens
for mobile devices now being produced with 'in-
cell' technology that eliminates a layer, such as
Samsung's Super AMOLED screens, by building the
capacitors inside the display itself.
Advancements
•This type of touchscreen reduces the visible distance (within
millimetres) between the user's finger and what the user is touching on the
screen, creating a more direct contact with the content displayed and
enabling taps and gestures to be more responsive.
21. Conclusion
• As it is very friendly, fast, accurate, easy for the
novices and fun to operate. It has been widely
accepted.
• Today, This Technology is been adopted by computer,
mobile users of all abilities because it is innovative,
simple.
• Designers are trying to use touchscreen to simplify
input commands for largely unsophisticated computer
users.
• In future there may be no usage of mouse and
keyboards as they will be replaced by touchscreens.