# Char, lower/upper case

**URL:** https://discourse.processing.org/t/char-lower-upper-case/32505
**Category:** Beginners
**Created:** [September 29, 2021, 9:26am UTC](https://discourse.processing.org/t/char-lower-upper-case/32505 "2021-09-29T09:26:36Z")
**Posts on this page:** 1
**Showing post:** 4

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### Author: ![GoToLoop](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/gotoloop/32/86_2.png) [@GoToLoop](https://discourse.processing.org/u/GoToLoop)
#### Post date: [September 29, 2021, 10:15am UTC](https://discourse.processing.org/t/char-lower-upper-case/32505/4 "2021-09-29T10:15:57Z")

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> [@Flip upper case with lower case](https://discourse.processing.org/t/flip-upper-case-with-lower-case/17013/3):
>
> If we print the binary() form of ASCII letters: println(binary('A', 8), hex('A', 2), (byte) 'A'); // 01000001 41 65 println(binary('a', 8), hex('a', 2), (byte) 'a'); // 01100001 61 97 println(binary('Z', 8), hex('Z', 2), (byte) 'Z'); // 01011010 5A 90 println(binary('z', 8), hex('z', 2), (byte) 'z'); // 01111010 7A 122 exit(); We’re gonna notice the only diff. between an uppercase ASCII letter from its corresponding lowercase is that the 3rd bit of the latter is 1. We can create a CASE\_MA…

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