First Touch
First Touch
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| The Soccer Blog |
How To Select The Best Touch Screen LCD Monitor
Touch screen monitors seem to be everywhere. The great thing about them is that they are extremely easy to use. The touch screen is like an invisible keyboard, but it displays only as much data and button choices as users need to complete a task, or set of tasks. That explains their popularity in devices from mall kiosks to complex industrial machinery.
The most important decision in selecting the best touch screen monitor for your application will be the type of touch screen technology to use. There are several types, each with its own advantages and disadvantages. We will cover the three most common types:
Resistive Technology
A resistive touch screen monitor is composed of a glass panel covered with thin conductive and resistive metallic layers, separated by a thin space. When a user touches the screen, the 2 layers touch at that point. The computer detects the change in the electrical field and calculates the touch point.
Resistive touch screens are generally the most affordable, but they only offer approximately 75-80% image clarity. The touch can be activated with nearly any type of object (stylus, gloved finger, etc.), but the outer surface can be damaged with sharp objects.
Capacitive Technology
In a capacitive touch screen monitor, a layer that stores a continuous electrical current is placed on top of the monitor's glass panel. When an exposed finger touches the monitor screen, some of the electrical charge transfers to the user. This decrease in capacitance is detected and located by circuits located at each corner. The computer then determines the touch point.
Capacitive touch screens are a durable technology that is often used in kiosks, point-of-sale systems and industrial machinery. Capacitive touch screens have a higher clarity than resistive-type (88-92%), and have greater endurance (up to 225 million touches) than a Resistive-type. However, capacitive screens can only be activated with an exposed finger (no gloves, pointers, etc.)
SAW Technology
SAW (Surface Acoustic Wave) touch screen monitors utilize a series of transducers and reflectors along the sides of the monitor's glass plate to create an invisible grid of ultrasonic waves on the surface. When the panel is touched, a portion of the wave is absorbed. The receiving transducer locates the touch point, and sends this data to the controller.
SAW touch screens have no layers on the screen, thus enabling over 90% image clarity, and can display high-detail graphics. They can be activated by a finger, gloved hand or soft-tip stylus. However, SAW panels are the most expensive of the three, and moving liquids or condensation on the face can cause false-triggers; solid contaminants on the screen can create non-touch areas, until they are removed.
Other Considerations
Other factors to consider in your selection process include:
Interface: Touch screen panels must communicate with the computer. The most common interface types are RS-232 and USB. New HID-compliant touch screen monitors eliminate the need for drivers.
Mounting: Options include panel mount, rack mount and free-standing. If free-standing, be sure that it uses a heavy-duty stand designed for touch screen; standard table top bases will topple over.
Environment: Touch screen monitors are available in standard, stainless steel and waterproof enclosures for a variety of environments.
Screen Size: Touch screen monitors are available form 3.5" to 52". The most common sizes are 15"-19", and 32"-42" for large control rooms. The aspect ratio (4:3 or 16:9) should also be considered.
The type of touch screen monitor you select will be contingent upon many factors, including type of data to be displayed (video, graphics, text), the intended users, the operating environment and where/how it will be mounted. Chosen correctly, touch screen monitors will be an excellent addition to your system.
For information on specific Touch Screen monitor details, please visit the TRU-Vu Monitors web site at http://www.tru-vumonitors.com/products/touchscreenmonitors.html
About the Author
Owner of TRU-Vu Monitors, Inc.
www.tru-vumonitors.com
how can i improve my first touch in football/soccer?
my first touch in football/soccer is awful and i always get told that i do crap because of my touch. how can i improve it? im fed up being told about it.
my first touch in football/soccer is awful and i always get told that i do crap because of my touch. how can i improve it? im fed up being told about it. i want some training that requires only 1 people. i also train on my garage.
their first touch. This is either by poor technique or lack of awareness or where defenders are. Watch the best players around the world as they have spent many hours honing their technique on how to control the ball properly. Below are a few techniques and drills that will help you improve both your first touch and ball control.
How to control the ball
Receiving
When receiving the ball, it is better to keep the ball moving into space or away from a defender, rather than to bring the ball to a complete stop. When receiving the ball, it's important to make contact just above the middle of the ball to keep the ball along the ground. It's important to cushion the ball, this brings the ball under your control. The good footballers can always settle the ball quickly and away from defenders and into space. This gives them extra time to keep one step in front of the opposition. To be able to move the ball into space and away from defenders, it's important that you are aware of what you are going to do with the ball before you get the full stop.
Trapping
Trapping is different to receiving in the way that trapping is to bring the ball to a complete stop. Trapping is typically used when the ball is traveling too fast for you to control effectively. When trapping the ball it is important to stay relaxed and on your toes. In contrast to being tense and stiff, this allows you to adjust quickly. When trapping the ball cushioning plays an important part. When cushioning you need to take the pace off the ball, this is done by withdrawing your foot at the moment of impact.
How to practice control
The easiest and most effective way to practice control is with a partner. You and your partner can practice the different types of control by passing the ball to each other or throwing the ball to each other. If you cannot get a partner, the next best thing is a wall. A wall gives you the chance to practice the skills that you want for as long as you want. With a wall you can practise simple passing and receiving to volleys and chest control. It's important when practising ball control, that you practice with both feet. Being able to control the ball with both feet makes you unpredictable to defenders.
Control with the inside of the foot
When controlling the ball with the inside of the Foot, the supporting leg must be slightly bent and must be planted 45 to 90° in relation to the path of the ball. At the moment of contact, cushion the ball along the original path, moving the ball either into space or away from a defender.
Control with the outside of the foot
This technique is useful when you have the defender pressuring you from behind. Firstly you must get your body in between the ball and defender standing slightly sideways with your arm slightly raised, to be able to Push or hold off a defender. The supporting leg must be slightly bent at a roughly 90° angle from where the ball is coming. On the moment of contact the ball is cushioned with the outside of the foot giving the defender no chance to get the ball fairly.
