Powerbook 520
Photo 1: Flightsoffancy, CC-BY-SA-3.0, via Wikimedia Commons (PowerBook520c 550c.jpg) Photo 2: CC BY-SA 2.5, via Wikimedia Commons (540c open.jpg)
Laptop, 1994, Apple. The PowerBook 520 belongs to the 500 series (code name Blackbird) introduced in May 1994, the first laptops with a trackpad, stereo speakers and built-in Ethernet; the 520 is the entry model with a 25 MHz 68LC040 and a greyscale passive-matrix display.
| Years | May 1994 to September 1995 |
|---|---|
| Manufacturer | Apple Computer Inc. (US) |
| Processor | Motorola 68LC040 at 25 MHz |
| RAM | 4 MB, expandable to 36 MB |
| ROM | 2 MB |
| Display | 9.5 inch passive-matrix LCD, 640 x 480, 16 grey levels (520c: colour) |
| Built-in storage | 3.5" SuperDrive (1.4 MB), 160 or 240 MB SCSI hard disk |
| Input | keyboard with function keys and trackpad |
| Interfaces | HDI-30 SCSI, ADB (Apple Desktop Bus), serial, Ethernet (AAUI), external video, PCMCIA with optional module, audio input and output, stereo speakers |
| Power | two nickel-metal-hydride batteries, up to 7 hours |
| Operating system | System 7.1.1 to Mac OS 8.1 |
| Dimensions | 57 (H) x 295 (W) x 240 (D) mm |
| Weight | 2.9 kg |
| Price (1994) | US$2,269 |
Documentation
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