What is the bit rate of a video terminal unit with 80 characters/line, 8…
2011
What is the bit rate of a video terminal unit with 80 characters/line, 8 bits/character and horizontal sweep time of 100 μs (including 20 μs of retrace time)?
- A.
8 Mbps
- B.
6.4 Mbps
- C.
0.8 Mbps
- D.
0.64 Mbps
Attempted by 59 students.
Show answer & explanation
Correct answer: A
Calculate total bits per line: 80 characters × 8 bits = 640 bits. Determine active time: 100 μs total - 20 μs retrace = 80 μs. Calculate bit rate: 640 bits / 80 μs = 8 Mbps.