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A+ Ch04
I/O Systems
39
Computer Science
12th Grade
10/06/2008

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Cards

Term
USB 1.1
Definition

127 Devices

12 Mbps

3 Meters

Term
USB 2.0
Definition

127 Devices

480 Mbps

5 meters

Term
USB 3.0
Definition

127 Devices

4.8 Gbps

Term
IEEE-1394a
Definition

63 Devices

400 Mbps

Term
Shadow Mask
Definition
Seperates the colors from the electron gun so that color of one pixel does not strike the dot of another pixel.
Term
HDMI
Definition

Highest video standard connection standard

1080p

Includes 7.1 audio

Term
Composite
Definition

Red, White, Yellow

Standard for lowest possible resolution.

Term
CRT
Definition
uses an electron gun to trace images on the screen.
Term
Refresh Rate
Definition
The amount of time it takes for a screen illumniate.
Term
Response Time
Definition

The time it takes for a pixel to go from Black to White to Black.

Measures in (ms)

Term
DVI
Definition

connector type for HD systems.

1080p

video only, no sound

Term
Component
Definition

RGB inputs

HD quality, video only

1080p

Term
S-Video
Definition

lower quality, better than composite

video only

 ps/2 style conector

Term
IRQ 0
Definition
System Timer (IRQ)
Term
IRQ 1
Definition
Keyboard (IRQ)
Term
IRQ 2
Definition
Cascade (IRQ)
Term
IRQ 3
Definition
COM 2&4 (IRQ)
Term
SVGA connector
Definition
DB-15F (3-row)
Term
Interrupt Request
Definition
where the peripheral alerts the microprocessor that it's ready to transfer
Term
Polling
Definition
where the microprocessor examines the status of the peripheral under program control
Term
Programmed I/O
Definition
where the microprocessor alerts the designated peripheral under program control.
Term
DMA
Definition
where the intelligent peripheral assumes control of the system's buses to conduct direct transfers with primary memory
Term
Serial
Definition
the bits of the word are transmitted along a single conductor, one bit at a time.
Term
Parallel
Definition
where all 8-bits are sent over a set of conductors at one instant
Term
IrDA
Definition
short range wireless specification;
1-2 meters;
clear line of sight
Term
NIC connector
Definition
RJ-45
Term
Keyboard/Mouse
Definition
PS/2;
6-pin Mini-din
Term
LPT/Parallel port
Definition
DB-25F
Term
Modem port
Definition
RJ-11
Term
Game port
Definition
DB-15F (2-row)
Term
Progessive Scan
Definition
digital tv signal format; paints the entire picture in one sequential set of horizontal lines
Term
IEEE-1394b
Definition
Firewire;
63 Devices;
800 Mbps
Term
Interlaced Scan
Definition
digital tv signal format; uses two different frames to create a complete picture.
Term
LDTV
Definition
Lower than NTSC standard;
Used in PSP, IPod
240p
Term
SDTV
Definition
standard for NTSC broadcasts;
480i
Term
HDTV
Definition
ATSC Standard;
720p, 1080i, 1080p
Term
Sound Card mic/audio out ports
Definition
RCA Mini Jack
Term
Serial Cable
Definition
DB-9, DB-25;
50ft cable length
Term
Parallel Cable
Definition
DB-25
10FT cable length
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