Tag: macOS

How to enter ASCII control characters with your keyboard

close photo of a macbook pro keyboard

How to enter ASCII control characters?

Entering ASCII control characters depends on the specific keyboard layout and operating system you are using. Here’s a general guide for Linux, Windows, and macOS:

Linux

In most Linux terminals, you can enter ASCII control characters using the keys Ctrl + Shift + u in combination with a letter or symbol. For example:

  • Ctrl + Shift + u and then 0 + 1: ASCII code 0x01 (Start of Heading)
  • Ctrl + Shift + u and then 0 + 2: ASCII code 0x02 (Start of Text)
  • Ctrl + Shift + u and then 0 + 3: ASCII code 0x03 (End of Text)
  • And so on…

Windows

In the Windows operating system, you can use the following steps:

  1. For characters with ASCII values 0 to 31, you can typically enter them using the Alt key and the numeric keypad. For example, to enter ASCII 0x01, press Alt + 0 + 0 + 1.
  2. For some characters, you can use the Windows Character Map utility. Press the Win key + R to open the Run dialog, type charmap, and press Enter. Select the desired character and copy/paste it.

macOS

On macOS, you can use the following steps:

  1. Character Viewer: Press Control + Command + Space to open the Character Viewer. Search for the desired control character and insert it into your document.

Note that you may have to go to the dots menu at top left and select Customize to add the Unicode category. The Unicode category is under Code Tables.

Note: The availability of these methods may vary depending on your keyboard layout and the specific software you are using. If you’re using a specific text editor or terminal, it might have its own way of entering control characters.

What are ASCII control characters?

ASCII control characters are special characters in the ASCII (American Standard Code for Information Interchange) character encoding scheme that are used to control peripheral devices such as printers and teletypewriters. They are non-printable characters and typically have specific functions rather than representing printable symbols like letters or numbers.

Here is a list of some commonly used ASCII control characters along with their decimal and hexadecimal values:

Control CharacterASCII DezimalASCII HEXDescription
NUL000null character
SOH101start of header
STX202start of text
ETX303end of text
EOT404end of transmission
ENQ505enquiry
ACK606acknowledge
BEL707bell (ring)
BS808backspace
HT909horizontal tab
LF100Aline feed
VT110Bvertical tab
FF120Cform feed
CR130Dcarriage return
SO140Eshift out
SI150Fshift in
DLE1610data link escape
DC11711device control 1
DC21812device control 2
DC31913device control 3
DC42014device control 4
NAK2115negative acknowledge
SYN2216synchronize
ETB2317end transmission block
CAN2418cancel
EM2519end of medium
SUB261Asubstitute
ESC271Bescape
FS281Cfile separator
GS291Dgroup separator
RS301Erecord separator
US311Funit separator
   
DEL1277Fdelete (rubout)

Foto von Jess Bailey auf Unsplash

 

 

Windows7 x64 nebst OS X Lion

Mit dieser Anleitung wird nun auch die letzte “Hürde” genommen um ein MacBook Pro (getestet mit Early 2008) mit 2 Festplatten (oder auch SSD/SSD oder SSD/HDD-Kombi) statt dem obsoleten optischen Laufwerk auszustatten.
Aus dem Umbau folgt ein Ärgernis welches nicht ausschließlich mit Boardmitteln von 10.7 bekämpft werden kann. Durch den Umbau kann Windows nichtmehr mit dem internen SuperDrive installiert werden. Die Installation von einem externen CD/DVD-Laufwerk (USB/Firewire) sowie von einem USB-Stick schlägt fehl. Ebenfalls brachte rEFIt bei mir keinen Erfolg wie in vielen Anleitungen im Netz zu finden ist.
Weiterhin war ich nicht gewillt das SuperDrive nochmals für eine Installation einzubauen. Somit hier nun eine Step-by-Step-Anleitung zur Installation von WIndows 7.