Determine the size of PROM required for implementing the 16-to-1 multiplexer.
2013
Determine the size of PROM required for implementing the 16-to-1 multiplexer.
- A.
1M × 1
- B.
2M × 1
- C.
8M × 1
- D.
32M × 1
Attempted by 502 students.
Show answer & explanation
Correct answer: A
Key formula: PROM size = 2^n × m, where n is the number of input variables and m is the number of output lines.
Data inputs = 16
Select lines = 4 (because 2^4 = 16)
Total input variables that affect the output = 16 + 4 = 20
Number of outputs = 1
Therefore, n = 20 and m = 1, so PROM size = 2^20 × 1 = 1,048,576 × 1 (commonly written as 1M × 1).
Final answer: 1M × 1