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Computer Science · Q3

Digital Computer Electronics

Engineering and GATE · Computer Science · question 3

Q3

Address 200H contains the byte 3FH. What is the decimal equivalent of 3FH

A.
63
Answer
B.
32
C.
16
D.
38
E.
None of the above

Answer: Option A

Solution

Answer: Option A
Solution:
To convert a hexadecimal number to its decimal equivalent, you need to understand the place values in hexadecimal.

In hexadecimal, the digit positions represent powers of 16, starting from 16^0 on the right.

The number 3F in hexadecimal can be broken down as follows:

3 is in the 16^1 position, so its value is 3 * 16 = 48.

F is in the 16^0 position. In hexadecimal, F equals 15, so its value is 15 * 1 = 15.

Adding these values together gives 48 + 15 = 63.

Therefore, the decimal equivalent of 3FH is 63.