The Macintosh 512K is the second of a long line of Apple Macintosh computers, and was the first update to the original Macintosh 128K. It was virtually identical to the previous Mac, differing primarily in the amount of built-in memory (RAM).
| Manufacturer | Apple Computer Company | CPU | Motorola 68000 @ 7.8338 MHz |
| Year Introduced | 1984 | RAM | 512 kB |
| Introductory Price | $2,795 |
Soon after Apple introduced the Macintosh 128K they realized that the Macintosh would need more internal memory. Eight months later, on September 10, 1984, Apple introduced the Macintosh 512K. With quadrupled RAM, the Macintosh was able to become a more business-capable computer and gained the ability to run more software. The Mac 512K originally shipped with Macintosh System 1.1 but was able to run Macintosh System 1.0 all the way up to System 4.1. When the Macintosh Plus was introduced in 1986, the Macintosh 512K was discontinued on April 14, 1986. All support for the Mac 512K was discontinued on September 1, 1998.