Calculate the required amount of video memory to work with a resolution of 800×600

Calculate the required amount of video memory to work with a resolution of 800×600, 1024×768, 1280×1024 pixels with 8, 16, 24 and 32 bit color coding.

а)

Let’s find out how many pixels will be in the first case:

800 * 600 = 480,000.

Find out the amount of memory in bits when encoded in 8 bits:

480,000 * 8 = 3840000.

Answer: 3840000.

If 16 bit:

3840000 * (16: 8) = 7680000.

Answer: 7,680,000.

If 24:

3840000 * (24: 8) = 11520000.

Answer: 11520000.

If 32:

3840000 * (32: 8) = 15360000.

Answer: 15360000.

b)

Let’s perform calculations by analogy:

1024 * 768 = 786432.

If 8:

786432 * 8 = 6291456.

Answer: 6291456.

If 16:

6291456 * (16: 8) = 12582912.

Answer: 12582912.

If 24:

6291456 * (24: 8) = 18874368.

Answer: 18874368.

If 32:

6291456 * (32: 8) = 25165824.

Answer: 25165824.

in)

Let’s perform calculations by analogy:

1280 * 1024 = 1310720.

If 8:

1310720 * 8 = 10485760.

Answer: 10485760.

If 16:

10485760 * (16: 8) = 20971520.

Answer: 20971520.

If 24:

10485760 * (24: 8) = 31457280.

Answer: 31457280.

If 32:

10485760 * (32: 8) = 41943040.

Answer: 41943040.