
der Computer
computer
An electronic device that can process, store, and output data using programs.
Mein Computer ist abgestürzt und ich kann nicht weiterarbeiten.
My computer crashed and I can't continue working.
computer
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computer
An electronic device that can process, store, and output data using programs.
Mein Computer ist abgestürzt und ich kann nicht weiterarbeiten.
My computer crashed and I can't continue working.
'Computer' (computer) is a very productive word and forms many compound nouns in German. The word 'Computer-' is simply placed before another noun, e.g. 'Computerspiel' (computer game), 'Computervirus' (computer virus), 'Computerkurs' (computer course), or 'Computertastatur' (computer keyboard).
Ich muss einen neuen Computertisch kaufen, meiner ist zu klein.
I need to buy a new computer desk; mine is too small.
In everyday life, certain verbs are used very frequently with 'Computer' (computer). These include: 'den Computer hochfahren' (to boot/start up the computer), 'herunterfahren' (to shut down), 'neu starten' (to restart), and when it no longer works, people say 'der Computer ist abgestürzt' (the computer has crashed).
Du solltest deinen Computer regelmäßig neu starten.
You should restart your computer regularly.
Pay attention to the prepositions. You work or sit 'am Computer' (at the computer). Data or programs are saved or found 'auf dem Computer' (on the computer).
Ich sitze den ganzen Tag am Computer.
I sit at the computer all day.
computer / calculator
„Computer“ and „Rechner“ can both refer to an electronic device for processing data. „Computer“ is the neutral and more common choice in everyday speech, while „Rechner“ can sound more technical and, depending on the context, can also mean a calculator. For a general-purpose work device, „Computer“ is usually clearer.

Ich speichere die Dateien auf meinem Computer.
I save the files on my computer.
Der neue Rechner im Büro verarbeitet die Daten besonders schnell.
The new computer in the office processes the data particularly quickly.