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On September 10, 1984, Apple introduced the Macintosh 512K, a personal computer that would go on to become a staple in the Macintosh series. The Macintosh 512K was designed, manufactured, and sold by Apple from 1984 to 1986, and at its launch, its price started at $3,195.
The Macintosh 512K featured an 8 MHz Motorola 68000 processor, a 9″ monochrome display, 512 KB of RAM, a 400 KB floppy disk drive, and a dedicated operating system: Macintosh System Software. This computer was a significant step forward for Apple, as it marked the beginning of a new era in personal computing.
Macintosh 512K was similar to the Macintosh 128K. The main difference between these two was the amount of RAM memory built-in in both Macs. Macintosh 128K has 128 KB of RAM while Macintosh 512K has 512 KB of RAM. It was a massive difference at the time. On Mac 512K users could load more data into memory from the floppy disks.
However, the Macintosh 512K’s time in the spotlight was short-lived, as it was discontinued on April 14, 1986. It was replaced by the Macintosh 512Ke, which offered some slight upgrades and improvements. Today, the Macintosh 512K is 38 years old, and although it is no longer in production, it remains a significant piece of technology history.
Macintosh 512K Details
|Introduced||September 10, 1984|
|Discontinued||April 14, 1986|
|Dimensions||13.6” H x 9.6” W x 10.9” D|
34.54 cm H x 24.38 cm W x 27.68 cm D
Mac 512K Tech Specs
|Processor Speed||8 MHz|
|Number of Cores||1|
|System Bus||8 MHz|
|Built-in Memory||512 KB|
|Maximum Memory||512 KB|
|Built-in Display||9” monochrome display|
|Resolution||512 x 342|
|Pixel Density||72 ppi|
|Serial||2 – RS-422|
1 – DE-9
|Audio Out||1 – Built-in speaker 8-bit 22-kHz|
|Hard Drive Interface||None|
|Media||400 KB floppy disk drive|
|Floppy Port||1 – DB-19|
|Original OS||Macintosh System Software 0.1|
|Maximum OS||System Software 2.0.1|
|Backup Battery||4.5 V Alkaline|
|Maximum Continuous Power||60 W|
|Line Voltage||110-120V AC (M0001W)|
220-240V AC (M00001WP)
Macintosh on Video
Further Reading and References
- Macintosh 512K: Technical Specifications – Apple Support
- Macintosh 512K – Wikipedia
- Mac 512K Fat Mac – Low End Mac
- Apple Macintosh 512k – The Centre for Computing History
- Mac 512K Blog – Mac GUI
- Today in Apple history: Macintosh 512K, aka the ‘Fat Mac,’ quadruples the memory – Cult of Mac
- Macintosh 512K – Old Crap Vintage Computing
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Last updated: March 12, 2023