Consider a raster system with resolution 640 by 480. What size is frame buffer…
2019
Consider a raster system with resolution 640 by 480. What size is frame buffer (in bytes) for this system to store 12 bits per pixel?
Answer: A. 450 kilobytes — Answer: 450 kilobytes Calculation: Number of pixels = 640 × 480 = 307,200 Total bits = 307,200 × 12 bits/pixel = 3,686,400 bits Total bytes = 3,686,400 ÷ 8 =…
- A.
450 kilobytes
- B.
500 kilobytes
- C.
350 kilobytes
- D.
400 kilobytes
Attempted by 128 students.
Show answer & explanation
Correct answer: A
Answer: 450 kilobytes
Calculation:
Number of pixels = 640 × 480 = 307,200
Total bits = 307,200 × 12 bits/pixel = 3,686,400 bits
Total bytes = 3,686,400 ÷ 8 = 460,800 bytes
Convert to kilobytes (1 KB = 1024 bytes): 460,800 ÷ 1024 = 450 KB
Therefore, the frame buffer size required is 450 kilobytes.
Note: If someone uses decimal kilobytes (1 KB = 1000 bytes), the value would be 460.8 KB, but in computing contexts KB typically means 1024 bytes, giving 450 KB.