Question

A video game displays images on your monitor having a full HD resolution (1920x1080 pixels). Each pixel contains R, G, B LED's, and each LED is controlled to shine at one of 256 levels. The game produces a new image on the screen 25 times per second. How many megabytes (MB) per second are being sent to your monitor while you are playing your game?​

Answer 1

Ответ:

1920x1080 = 2073600 pixels in FHD screen

1 led have 256 levels = 1 Byte

1 Pixel have 3 color  = 3 * 1 Byte = 3 Byte

1 FHD picture is 2073600 pixels * 3 Byte = 6220800 Byte

If the picture change 25 times per second

6220800 Byte * 25 = 155520000 Byte in second

or

155520000 Byte : 1024 = 151875 Kb in second

or

151875 Kb : 1024 = 148,3 Mb

Answer 2

To calculate the number of megabytes per second being sent to the monitor, we need to consider the number of pixels, the number of bits per pixel, and the number of times the image is refreshed per second.

First, let's calculate the total number of pixels on the screen: Total pixels = width x height Total pixels = 1920 x 1080 Total pixels = 2,073,600

Next, let's calculate the number of bits per pixel: Number of bits per pixel = 8 bits per color x 3 colors (R, G, B) Number of bits per pixel = 24 bits

Now, let's calculate the total number of bits per second: Total bits per second = Total pixels x Number of bits per pixel x Refresh rate Total bits per second = 2,073,600 x 24 x 25 Total bits per second = 1,488,384,000 bits per second

Finally, let's convert the total bits per second to megabytes per second: 1 byte = 8 bits 1 megabyte = 1,048,576 bytes

Total megabytes per second = Total bits per second / (8 x 1,048,576) Total megabytes per second = 1,488,384,000 / 8,388,608 Total megabytes per second ≈ 177.83 MB/s

Therefore, while playing the game, approximately 177.83 megabytes per second are being sent to your monitor.