Comptia A+ 220-801 Chapter 3 Flashcards
is the expansion card you put into a computer to allow the computer to display information
on some kind of monitor. A video card is also responsible for converting the data sent to it
by the CPU into the pixels, addresses, and other items required for display. Sometimes, video
cards can include dedicated chips to perform some of these functions, thus accelerating the
speed of display.
Video Card pg 130
An is simply a circuit board you install
into a computer to increase the capabilities of that computer. Expansion cards come in
varying formats for different uses, but the important thing to note is that no matter what
function a card has, the card being installed must match the bus type of the motherboard
you are installing it into. For example, you can install a PCI network card into a PCI
expansion slot only.
expansion card (also known as an adapter card) pg 129
The following are the four most common categories of expansion cards installed today:
Video
Multimedia
I/O
Communications pg 129
is a class of internal and external devices that allows you to connect a broadcast signal, such as home cable television, to your computer and display the output on the computer monitor. TV tuner cards come in analog, digital, and hybrid varieties. Most TV tuner cards act as video capture cards as well.
TV Tuner Card pg 132
A card can also be a standalone
device and is often used to save a video stream to the computer for later manipulation
or sharing. Video-sharing sites on the Internet make video capture cards quite popular with
enterprises and Internet socialites alike. TV tuner cards and video capture cards need and
often come with software to aid in the processing of multimedia input.
video capture pg 132
is often used as a catchall phrase for any expansion card that expands the system to interface with devices that offer input to the system, output from the system, or both.
I/O Card
is an expansion card that connects a computer to a network so that it can communicate with other computers on that network.
(NIC) network interface controller pg 133
A riser card is a printed circuit board that picks up a multitude of signal lines (often bused) via a single connector (usually an edge connector) on a main board and distributes them via dedicated connectors on the card.
Riser cards are often used to allow adding expansion cards to a system enclosed in a low-profile case where the height of the case doesn’t allow for a perpendicular placement of the full-height expansion card.
A riser card is a board that plugs into the system board and provides additional slots for adapter cards. Because it rises above the system board, it enables you to connect additional adapters to the system in an orientation that is parallel to the system board and save space within the system case.
riser card pg 134
An is a method of connecting two dissimilar items together. A peripheral interface
is a method of connecting a peripheral or accessory to a computer, including the specification
of cabling, connector and port type, speed, and method of communication used.
interface
The most common interfaces used in PCs today include (in no particular order):
Drive interfaces pg 145 SCSI Parallel Serial USB IEEE 1394 (FireWire) RJ-45 Audio (RCA and TOSLINK) PS/2
What are the transfr speeds of USB 1.0, 2.0 3.0
USB 1.0 12Mbps Full Speed
USB 2.0 480Mbps High Speed
USB 3.0 5Gbps (5000Mbps) SuperSpeed
Name 2 types of videoconnectors
VGA, DVI pg 166
A is a device that converts digital signals from a
computer into analog signals that can be transmitted over phone lines and back again. These expansion card devices have one connector for the expansion bus being used (PCIe, PCI, and so on) and another for connection to the telephone line. Actually, as you can see in Figure 3.4,
which shows an old ISA modem, there might be two RJ-11 ports: one for connection to the telephone line and the other for connection to a telephone. This is primarily so that a phone can gain access to the same wall jack that the computer connects to without swapping their cords. Keep in mind, though, that you won’t be able to use the phone while the computer is connected to the Internet.
modem pg 134
How many pins does a DB25 have?
The DB25 (originally DE-25) connector is an analog 25-pin plug of the D-Subminiature connector family (D-Sub or Sub-D).
That port is the IEEE 1394 port (shown on a desktop PC in Figure 3.9 and on a laptop in Figure 3.10), more commonly known as a FireWire port.
IEEE 1394
