What is D stand for 4D?

Answer 1

Based on your question, it looks like you are looking for a hexadecimal conversion.

Hexadecimal, or "Base 16" is a numbering system.

We have 10 fingers, and for that reason we developed a base 10 numbering system. 0,1,2,3,4,5,6,7,8,9

Each digit, represented in one space.

Hexadecimal, however, is base 16... The reason for this is because of computers having 8 bits per byte; 4 bits is called a nibble, and with 4 1's and 0's, you can get up to 16 possible combinations.

Here is a decimal / binary / hexadecimal table, so you can see how it works.

Decimal / Binary / Hex

0 / 0000 / 0

1 / 0001 / 1

2 / 0010 / 2

3 / 0011 / 3

4 / 0100 / 4

5 / 0101 / 5

6 / 0110 / 6

7 / 0111 / 7

8 / 1000 / 8

9 / 1001 / 9

10 / 1010 / A (See what we did there? It's "A", instead of 10, so it still takes one space!)

11 / 1011 / B

12 / 1100 / C

13 / 1101 / D

14 / 1110 / E

15 / 1111 / F

So... the D in the hexadecimal code 4D means "13", or 1101

To look at 4D in a computer's memory, it would be:

01001101

0100 (4)

1101 (D)