Computer Science for IGCSE & O level - Data Representation (Section 14 - No. 1)
If an image is 1024 pixels wide and 768 pixels high, and the color depth is 16 bits, how many bytes are needed to store this image uncompressed?
1572864 bytes
1572864 bits
786432 bytes
786432 bits
解释
1024 x 768 pixels * 16 bits/pixel = 12582912 bits. Since 8 bits = 1 byte, 12582912 / 8 = 1572864 bytes or 1024 x 768 pixels * 2 bytes/pixel = 1572864 bytes