CompTIA A+ Certification All-in-One Exam Guide

find ardent supporters of “keebeebyte” and equally passionate supporters of
“kehbeebyte.” It doesn’t really matter, because the rest of us just say
“kilobyte.”
Which Pattern Goes to Which Row?
The second question is a little harder: “Which pattern goes to which row of
RAM?” To understand this, let’s take a moment to discuss binary counting.
In binary, only two numbers exist, 0 and 1, which makes binary a handy way
to work with wires that turn on and off. Let’s try to count in binary: 0, 1…
what’s next? It’s not 2—you can only use zeros and ones. The next number
after 1 is 10! Now let’s count in binary to 1000: 0, 1, 10, 11, 100, 101, 110,
111, 1000. Try counting to 10000. Don’t worry; it hardly takes any time at
all.
Super; you now count in binary as well as any math professor. Let’s add to
the concept. Stop thinking about binary for just a moment and think about
good old base 10 (regular numbers). If you have the number 365, can you put
zeros in front of the 365, like this: 000365? Sure you can—it doesn’t change
the value at all. The same thing is true in binary. Putting zeros in front of a
value doesn’t change a thing! Let’s count again to 1000 in binary. In this
case, add enough zeros to make 20 places:
00000000000000000000
00000000000000000001
00000000000000000010
00000000000000000011
00000000000000000100
00000000000000000101
00000000000000000110
00000000000000000111