Translation guide
In Japanese, 'Macintosh' almost always refers to Apple's Macintosh computer. It is commonly shortened to マック (Makku). The full form マッキントッシュ is understood but less common in everyday speech.
マックを使っています。
I use a Mac.
I bought a new Mac.
マックで動画を編集している。
I'm editing videos on my Mac.
The full Japanese transliteration of 'Macintosh'. Used in formal or technical contexts, or when emphasizing the full name. Less common in daily conversation.
初代マッキントッシュは1984年に発売された。
The original Macintosh was released in 1984.
Literally 'Apple computer'. Can be used to refer to a Mac, but is less specific and somewhat dated. More commonly used to refer to the company or its products in general.
彼はアップルコンピュータを愛用している。
He is a devoted user of Apple computers.