How to convert a binary number to a decimal value???????

FatalityTech

FatalityTech

Member
Im studying for my A+ Certification and want to make sure i understand everything as best as possible. Im stuck i have no idea and the book i use for studying just confused the hell out of me. Any one know how and can explain????
 
That a converter, The calculator in windows has that option under scientific view. I want to know how to do it by hand. Like i said im trying to understand everything in as much depth as possible. Thank you though. I didnt actually think anyone was going to reply to this.
 
you can covert binarty to decimal by mass...for example as u know :

4369=4*10^3+3*10^2+6*10^1+9*10^0

so as converting binary to decimal we use the same method but by mass of 2 ;


ex: 11011=1*2^4 + 1*2^3 + 0*2^2 + 1*2^1 + 1*2^0= 27 decimal
 
You can convert by first understanding that binary is 2^n
N being the number of bits.

That gives you the largest number you can count - 1 because 0 counts as a number.

2^2 = 4 4-1 = 3 (The max number you can count to)

For example:

The binary number 11
x2 x1
1 1

Therefore: 2 + 1 = 3

Or
x2 x1
0 1
Which is 1 = 1

As for the larger binary numbers

x128 x64 x32 x16 x8 x4 x2 x1
1 0 1 1 0 1 0 1

Which is 128 + 32 +16 +4 +1 = 181

Each next multiplier is a double of the previous bit.
Like the top it goes: 1,2,4,8,16,32,64,128, 256, 512, 1024, so on and so on.
Notice the how these start to sound like RAM quantity numbers? Think of it like that.

The max total memory a 32 bit cpu can address is 2^32 = 4,294,967,296
This is why 32 bit OS's or CPUs have issues near 4GB.
 
I can do it. I learned before. Just thought i'd share. Now i have to learn the ASCII table off. You dont need to know that for A+ do you?
 
no i dont think it is. Can anyone post a list of the certifications that i can get after the A+??? I know theres cisco, network+ and a few others
 
You must log in or register to reply here.
Back
Top