nonresident training course - Historic Naval Ships Association

ASSIGNMENT 1
Textbook Assignment: “Basic Display Devices and Systems”, chapter 1,
pages l-l through 1-15, “Personal Computer Video
Displays and Input Devices”, chapter 2, pages 2-1
through 2-7.
1-1. Information available for
viewing only as long as it
remains on the screen of the
display is known as what
type of information
1. Soft copy
2. Hard copy
3. Temporary
4. Nonpermanent
1-2. Which of the following is
the best description of the
function of a cathode-ray
tube (CRT)
1. Converts light into a
visual display
2. Converts digital signals
into a magnetic signal
3. Converts electronic
signals into a visual
display
4. Converts operator
entered inputs to a
visual display
1-3. A CRT must contain a vacuum
for which of the following
reason
1. Air molecules could
interfere with the
electron beam
2. Gases could ionize and
short out the CRT
3. Oxygen could cause the
CRT filament to burn up
4. Each of the above
1-4. The inside of the face of
the CRT is coated with which
of the following materials
1. Phosphor
2. Phosphorus
3. Phosphene
4. Phosphate
1-5. The time that a display
produced by an electron beam
remains on the screen is
known by which of the
following terms
1. Scan
2. Persistence
3. Focus
4. Blanking
1-6. Which component of a CRT
acts as a source for the
electron beam
1. Deflection system
2. Control grid
3. Electron gun
4. Phosphor screen
1-7. Applying a small ac voltage
to the filament of a CRT
causes which of the
following events to occur
1. The beam is blanked
2. The beam is unblanked
3. Electrons are attracted
to the cathode
4. Electrons are freed from
the cathode
1