Why does my computer need a 15 pin VGA port to connect to another screen, while my DVD player only needs the two contacts of an RCA cable?
VGA doesn't contain any audio so for the purposes of this question we can ignore the red and white cables which are used for stereo sound. The VGA plug allows for separate red, blue and green signals (as well as timing instructions on other pins) whereas the yellow RCA connector is used for compo…
The Short Answer
VGA doesn't contain any audio so for the purposes of this question we can ignore the red and white cables which are used for stereo sound. The VGA plug allows for separate red, blue and green signals (as well as timing instructions on other pins) whereas the yellow RCA connector is used for composite video. Composite video squishes all the information of the picture, the colour and the timing signals into one signal. This results in problems with quality such as [dot crawl](_URL_0_) that are not usually present with component or RGB output. In addition, the VGA connector contains pins to allow the monitor to be identified (for plug-and-play purposes) that allow the computer to select the correct timings for it.
Analysis
Key Concepts: Purposes, used, signals
This explanation focuses on purposes, used, signals and spans 122 words across 5 sentences. At 63% above the average Technology explanation (75 words), this is one of the more thorough answers in this category, reflecting the complexity of the underlying question.
What This Answer Covers
The explanation opens with: “VGA doesn't contain any audio so for the purposes of this question we can ignore the red and white cables which are used” It then elaboratesultimately building toward a complete picture across 5 connected points.
How This Compares in Technology
Ranked #89 of 500 Technology questions by answer depth (top 19%). This places it in the comprehensive tier — the top quarter of most thoroughly answered questions. Questions at this depth typically involve multi-faceted topics requiring nuanced explanation.
Frequently Asked Questions
Is there a simple explanation for why my computer need a 15 pin vga port to connect to another screen, while my dvd player only needs the two contacts of an rca cable?
VGA doesn't contain any audio so for the purposes of this question we can ignore the red and white cables which are used for stereo sound. The VGA plug allows for separate red, blue and green signals (as well as timing instructions on other pins)…
How detailed is this explanation compared to similar Technology questions?
This is one of the most thorough answer at 122 words, ranked #89 of 500 Technology questions by depth. The key concepts covered are purposes, used, signals.
What approach does this answer take to explain my computer need a 15 pin vga port to connect to another scr?
The explanation uses direct explanation across 122 words. It is categorized under Technology and addresses the question through 1 analytical lens.