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RFID, LCD, Alloys - Coggle Diagram
RFID
RFID "tags" contain a computer chip and an antenna. When a RFID reader is within range of a tag, the electric field it has induces a current within the antenna. This activates the computer chip which uses the antenna to relay data back to the reader.
RFID is a smart material because it responds to an element in its environment, that being very specific electromagnetic signals
Uses
radiowaves
All RFID systems have at least three major components: readers, antennas, and tags.
There are three types of RFID: beaconing, transponding, and intelligent
.
RFID can be divided into three main types, including Beaconing RFID. This RFID has battery-powered tags that generate encrypted identification messages every 100 milliseconds to five seconds. Transponder RFID is an electronic toll collection (ETC) RFID that uses an active transponder or RFID tag, a passive reader, and an antenna. A hybrid of beaconing and transponder RFID, Intelligent RFID has tags activated at frequent intervals to scan their environment for fixed reference points to determine their location before being transmitted to the reader.
The Vatican is using RFID to keep track of more than 2 million ancient manuscripts in the Vatican Library.
RFID is also used to track food.
RFID is also used in outer space.
RFID tags are used in Nintendos Amibos
RFID is the technology used for contactess payment
Radiohead
yippee
yippee
yippee
yippee
yippee
yippee
yippee
LCD
The aspect ratio is the ratio of the width and the height in respect to screen size.
Widescreen generally displays have a 16:10 aspect ratio.
HDTV screens have a 16:9 aspect ratio
LCD stands for
liquid crystal display
TFT
thin film transistor
The contrast ratio refers to the difference in light intensity between the brightest white and the darkest black.
A higher initial number for the contrast ration indicates a better quality picture.
The Static contrast ratio indicates the difference that can be displayed at the same time.
The dynamic contrast ratio indicates the difference that the monitor is capable of producing.
The response time
indicates how quickly a pixel can go from black, to white, and back to black.
The response time is indicated in milliseconds.
A response time that is too slow (above 8ms) results in ghosting or blurred images.
Brightness or luminescence identifies the amount of light the monitor produces.
Brightness is measured In candelas per square meter.
A brighter screen is typically desired for watching movies, or on laptops where the screen is viewed in full Sunlight.
The viewing angle identifies the angle at which the image can still be seen on a LCD screen.
The viewing angle is described with two numbers: horizontal angle and vertical angle, with a higher number being better.
The pixel pitch is the distance between pixels. A lower number means a sharper image and possibly higher resolutions.
Twisted Nematic panels are the most common type of LCD technology used in computer monitors, especially in smaller sizes.
Twisted Nematic panels have poor color reproduction due to the fact that only 6-bits per color can be displayed. They mimic true 24-bit color using dithering and other techniques.
In plane switching panels have the best color reproduction quality and viewing angles of the display types, and are well suited for graphic design where full and accurate color representation is required.
Because CRT monitors have better color reproduction than TN monitors and are cheaper than IPS monitors, they are still used by many graphic artists.
Cold Cathode Fluorescent Lamp is currently the most common backlight source for LCD panels.
Light Emitting Diode backlights provide brighter screens, lower power consumption, a wider colour range, greater contrast, and mercury-free construction.
The resolution is the number of pixels, and is expressed using two numbers: the number of horizontal rows and vertical columns.
LCD monitors often have a native (optimum) display resolution.
Pressing lightly on the screen may revive a dead pixel
Resolutions with a W in the name are widescreen resolutions with a 16:10 aspect ratio.
Cheaper TVs and monitors at lower resolutions or using interlacing (where every other line is drawn with each pass) are not capable of displaying all of the video content in full HD.
Monitor size is typically described using a diagonal measurement.
CRT monitors will typically list the monitor size along with the viewable image size which is smaller than the total screen size.
LCD monitors use a single value for the screen size. LCD monitors can use the entire screen for displaying images.
LCD displays are very delicate and occasionally a pixel fails to display properly (called a dead pixel).
There are utilities to identify and possibly fix dead pixels on a monitor.
Alloys
Nickel titanium
Tis a shape memory alloy
excellent thermal conductivity, high corrosion resistance, and biocompatibility
Used as stuff to unclog blood vessels and stuff
nickel and titanium
Duralumin
Lightweigt
Hard
Age hardernable
Aluminium, copper, manganese, magnesium, sometimes silicone
Steel
hardness, toughness, tensile strength, yield strength, elongation, fatigue strength, corrosion, plasticity, malleability and creep
fork
knife
spoon
Paper clips
scissors
sink
cabinets
radiator
pots
pans
emergency stairs
home appliances
softball bat
cars
roofs
bridges
reinforce concrete
train tracks
wires
magnet
architecture
sculpture
ruler
gun
watches
scalpel
saw
tablet
bin
piercings
rings
spaceship
chair
coat hanger
door handle
water bottle
sharpener
guitar
drum
pipe
beams
drills
clock
belt
button
table
coat hanger
glasses
an alloy of iron and carbon containing less than 2% carbon and 1% manganese and small amounts of silicon, phosphorus, sulphur and oxygen
Bronze
Copper and tin
Corrosion resistant
Ductile
