CST8174_Lecture_14_Display_Devices(2)

CST8174_Lecture_14_Display_Devices(2) - Algonquin College...

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Thursday, May 7, 2009 Matthew O’ Meara 13 - 1 Algonquin College CST8174 CST8174 Computer Technology Basics Display Devices
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Thursday, May 7, 2009 Matthew O’ Meara 13 - 2 Algonquin College CST8174 Display Devices Two devices are needed to produce a video image Monitor Video card or display adapter
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Thursday, May 7, 2009 Matthew O’ Meara 13 - 3 Algonquin College CST8174 Monitor Where the information and pictures are displayed Two types of monitor have captured the market CRT Cathode Ray Tube LCD Liquid Crystal Display
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Thursday, May 7, 2009 Matthew O’ Meara 13 - 4 Algonquin College CST8174 CRT Monitors The vast majority of monitors in use are of the traditional CRT design Works on the same principles as a television set The insides of CRT monitors are extremely dangerous Most monitors have voltages exceeding 15,000 to 30,000 volts
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Thursday, May 7, 2009 Matthew O’ Meara 13 - 5 Algonquin College CST8174 Inside A Computer Monitor
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Thursday, May 7, 2009 Matthew O’ Meara 13 - 6 Algonquin College CST8174 CRT Monitors How a CRT monitor works
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Thursday, May 7, 2009 Matthew O’ Meara 13 - 7 Algonquin College CST8174 CRT Terminology Electron guns Creates a narrow beam of electrons Three guns, one for each color RGB (Red, Green, Blue) Anode Used to accelerate the electrons Electrons are negatively charged The anode is positively charged attracting them from the cathode
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Thursday, May 7, 2009 Matthew O’ Meara 13 - 8 Algonquin College CST8174 CRT Terminology Deflecting coils Produce an electromagnetic field to adjust the direction of the electron beam’s point of impact There are two coils Horizontal to move the beam left or right Vertical to move the beam up or down
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This test prep was uploaded on 04/17/2008 for the course CST CST8174 taught by Professor Matthewo'meara during the Winter '08 term at Algonquin College.

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CST8174_Lecture_14_Display_Devices(2) - Algonquin College...

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