Question

Помогите с информатикой ! 1) Вычислите необходимый объем видеопамяти в килобайтах для графического режима, если разрешение экрана монитора составляет 1280х800 пикселей, глубина цвета – 16 бита. 2)Скольких различных цветов могут быть пиксели неупакованного растрового изображения, имеющего размер 1024х256 пикселей и занимающего на диске 160 килобайт? Заранее огромное спасибо )

Answer 1

1) 1280*800*16 бит = 16384000 бит / 8 / 1024 / 1024 = 1,96 мбайт.
2) 1024*256=262144 пикс / 8 / 1024 = 32 кбайт; 160 кб / 32 кб = 5 бит на пиксель; 2^5 = 32 цветов могут иметь.

Answer 2

Calculating the Required Video Memory for a Graphics Mode

To calculate the required video memory in kilobytes for a graphics mode, we need to consider the screen resolution and color depth.

The formula to calculate the required video memory is as follows:

Video Memory (in kilobytes) = Screen Resolution (in pixels) × Color Depth (in bits) ÷ 8 ÷ 1024

Let's calculate the required video memory for the given parameters:

1) Screen resolution: 1280x800 pixels Color depth: 16 bits

Using the formula, we can calculate the required video memory:

Video Memory = 1280 × 800 × 16 ÷ 8 ÷ 1024

Calculating this expression gives us the required video memory in kilobytes.

Calculation:

Video Memory = 1280 × 800 × 16 ÷ 8 ÷ 1024 = 204800 kilobytes

Therefore, the required video memory for the given graphics mode is 204800 kilobytes.

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Calculating the Number of Colors in an Unpacked Raster Image

To calculate the number of different colors that can be represented in an unpacked raster image, we need to consider the image size and the amount of disk space it occupies.

The formula to calculate the number of colors is as follows:

Number of Colors = Disk Space (in kilobytes) ÷ Image Size (in pixels)

Let's calculate the number of different colors for the given parameters:

2) Image size: 1024x256 pixels Disk space: 160 kilobytes

Using the formula, we can calculate the number of colors:

Number of Colors = 160 ÷ (1024 × 256)

Calculating this expression gives us the number of different colors.

Calculation:

Number of Colors = 160 ÷ (1024 × 256) = 0.0006103515625 colors

Therefore, the number of different colors that can be represented in the given unpacked raster image is approximately 0.0006 colors.

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