✍️ When You Type, You See Letters — But the Computer Sees Numbers
Let’s say you type:
A
The computer doesn’t see the letter A.
It sees a number: 65
And then it turns 65 into:
01000001
That’s the real code for “A” in binary.
Every key on your keyboard has a number.
💬 Let’s See Some More
| Letter | Number | Binary |
|---|---|---|
| A | 65 | 01000001 |
| B | 66 | 01000010 |
| a | 97 | 01100001 |
| space | 32 | 00100000 |
| ! | 33 | 00100001 |
So the sentence:
Hi!
becomes:
-
H = 01001000
-
i = 01101001
-
! = 00100001
📖 What About a Whole Story?
Let’s write:
The dog ran.
That’s 12 characters (including the dot and spaces).
So that’s 12 bytes.
Each byte is made of 8 bits.
So 12 × 8 = 96 bits.
That’s 96 switches flipping ON and OFF just to store a small sentence!
📥 Why It’s Important
This is how:
-
Books are typed
-
Emails are sent
-
Web pages are read
-
Chat messages are saved
Even if you write one tiny word… your computer is flipping dozens of switches in a special pattern to keep it.