Computers speak a different language than us.
Each letter on the keyboard is an electronic signal.
The computer reads each of these as a group of one’s or zero’s.
It is called binary code and hexadecimal system.
These codes although just involving two numbers can have literally billions of combinations.
I’m not sure exactly what you mean, but if I do understand it :
Most if not all keyboards use what is called ASCII. It’s basically a number assigned to each letter, number, symbol, and other inputs. For example, the letter ‘a’, in lowercase, is actually 65. ‘b’ is 66, etc. After z, it goes to upper case, then more.
So when you hit the ‘a’ key, without the shift or the caps lock button down, then it actually sends the computer the signal of ‘65′.
The way how most programs know how to handle typing, is that have a constant function always running to accept data from the keyboard. Let’s say for the game of snake common on most cell phones. You only use 4 buttons, the four arrows, to play. So it’s always checking for input. It checks and if it sees the code the up arrow sends comes in, it knows you pushed up.
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August 28th, 2009 at 11:55 am
Computers speak a different language than us.
Each letter on the keyboard is an electronic signal.
The computer reads each of these as a group of one’s or zero’s.
It is called binary code and hexadecimal system.
These codes although just involving two numbers can have literally billions of combinations.
http://en.wikipedia.org/wiki/Hexadecimal
http://en.wikipedia.org/wiki/Binary_code
August 28th, 2009 at 11:55 am
I’m not sure exactly what you mean, but if I do understand it :
Most if not all keyboards use what is called ASCII. It’s basically a number assigned to each letter, number, symbol, and other inputs. For example, the letter ‘a’, in lowercase, is actually 65. ‘b’ is 66, etc. After z, it goes to upper case, then more.
So when you hit the ‘a’ key, without the shift or the caps lock button down, then it actually sends the computer the signal of ‘65′.
The way how most programs know how to handle typing, is that have a constant function always running to accept data from the keyboard. Let’s say for the game of snake common on most cell phones. You only use 4 buttons, the four arrows, to play. So it’s always checking for input. It checks and if it sees the code the up arrow sends comes in, it knows you pushed up.
August 28th, 2009 at 11:55 am
S is converted to 73 in HEX and than into 0’s and 1’s using binary
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