Cathode Ray Tubes Alex Chen Stock P6 October 12th, 2004 How Does it Compare to Other Monitors Now? Advantages: Cheaper on the market now, due to being established longer
Disadvantages: Produces x-rays; some are not blocked by lead shield Disposal: have to deal with lead; illegal to just dump in trash Big, bulky, power hungry (110 watts; compared to 35 watt LCDs) Accounts for 80% of electricity use in typical home computer setup!
Basic Monitor Interface The basic interface between any monitor and the computer, whether CRT or LCD, is identical. Its just the structure of the display that differs. An UXGA adapter takes digital data sent by application programs, stores it in VRAM or some equivalent, and converts the data from digital into analog data for transmission to the monitor.
Transmission from PC to Monitor The display information is in analog form, so it is send to the monitor through a VGA cable. There are many signals, all of these combined into a composite signal by the VGA cord
What do you already know about Cathode Ray Tubes? Structure of Cathode Ray Tube Etymology: Cathode rays in a vacuum tube. Cathode rays are high energy electrons emitted from the heated cathode (-) of a vacuum tube
How Does it Work Electron gun is weak particle accelerator (only electrons(-)). Aims electrons at phosphor screen where they light up the image Small heater heats cathode (-), emits electron cloud that is focused into an electron beam by two anodes(+): accelerating anode and focusing anode.
Black-and-white monitors only have one electron gun; color monitors have three (RGB). Variations of CRTs Metal screen filled with holes sitting just behind phosphor layer. Electron guns each send beam through hole to a single pixel triad of tubes phosphor layer. Aperture Grill - Looks kind of like a grill; with
lines jutting down the screen packed together in strips Shadow Mask - packed together in clusters. If you look closely, you can see little individual dots, known as pixels Why So Big and Bulky? Standard cathode ray tube technology requires a certain distance between beam
projection device and screen (kind of like mile-long particle accelerators). How Long has it Been Around? Invented in 1896 by Ferdinand Braun First used for oscilloscopes, then for television, and finally for computers. Philo Farnsworth developed the cathode ray tube that would be used for
television and other electronic displays Responsible for many contributions to physics, but this is a computer programming class, not a physics class. Where can you see it? Look right in front of you. Theyre big and fat; what else can they be?
Some Various Information If you work near the back of a cathode ray computer monitor, youll be dosed with more radiation than if you were working at the front of it. Do not put a power magnet near a cathode ray tube; can cause magnetization of the shadow mask
The Future of CRTs Because CRTs now offer no real advantages over LCD monitors, they will become obsolete soon. The price of LCDs is already decreasing. Works Cited
I used Wikipedia (http://www.wikipedia.org) Howthingswork About.com
This is the result shown in the R output. Since it is for all predictors, it is also known as the . global test. Now we want to test if all predictors are insignificant. This is actually the global test....
I submitted a request for the ILL system and it took four weeks to even get a notice that the books had to be sent from UBC. I really needed these materials and wasted much time waiting for their arrival....
Required Reading Conferring Assessment 10-12 minute sessions per student Requirements include: Title, author, genre, # of pages for each book Synopsis and author's "purpose" of story Focus and articulated explanation of writing craft (HOW did the author write in order...
Simulation and heuristic solutions to NP complete problems. Student projects in simulation, field programmable gate arrays, and automated testing. Externally funded. Service. Working for CIO Dr. Ray Ford as IT/Legal advisor. Promoted to Associate Dean. As Department Chair focused on...
Chitling Test * * * * Preview Question 1: What argues for and against considering intelligence as one general mental ability? ... News Gothic MT MS Pゴシック Equity 1_Equity 2_Equity 3_Equity 4_Equity 5_Equity 6_Equity Chapter 10 Intelligence and Mental Abilities...
Interoperabilità concettuale Problemi centrali: (A) connettere concetti (B) connettere discipline (C) connettere istituzioni (D) connettere KOS (A) Connettere concetti Analisi di dominio: i linguaggi delle diverse comunità sono incommensurabili? [Hjørland] Traduttore = traditore?
Ready to download the document? Go ahead and hit continue!