Updated: 09/12/2023 by Computer Hope

One may refer to any of the following:

1. One is a numerical value represented as "1" that's the first positive number following the zero. On a computer keyboard with a numeric keypad, there are two 1's. One on the top row of numbers and the other 1 on the keypad.

What symbol is on the 1 key?

On U.S. keyboards, the 1 key is on the same key has the exclamation mark (!).

Other computer terms with "one" in them

The following list is other computer-related terms with the word "one" in them.


For computer terms that start with the number 1, see our computer number terms.

2. In binary, 1 equals On.


In ASCII (American Standard Code for Information Interchange), the numerical value of "1" is "049" in decimal (00110001 in binary). To count to "1" in binary, it would be 00000001.


Doing the Alt code Alt+49 creates a "1" character.

3. The number 1 is also with the Alt+1, Command+1, Ctrl+1, and Shift+1 keyboard shortcuts.

4. On the keyboard LEDs, a square with the number "1" indicates the Num Lock on some keyboards.

5. The number 1 is used as chat slang to say "one" or "won." For example, someone could shorten "someone" into "some1."

6. With leetspeak, the number 1 is used in place of the letter "l" (L) in text.

7. As a Roman Numeral, "I" is 1.

Digit, Number