Mac Powerbook 520c

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The Apple Macintosh PowerBook 520c features a 25 MHz 68LC040 processor, 4 MB or 12 MB of RAM, a 160 MB, 240 MB, or 320 MB hard drive, and support for multiple batteries in a sleek portable case with a 9.5″ color dual-scan display. The PowerBook 500 series was the first line of PowerBooks to have a “trackpad” where the cursor followed the movement of your finger. The trackpad was a revolutionary input device, and has been used since in the vast majority of modern laptops.

Introduction
Date:		 May 16, 1994 Discontinued
Date:		 September 16,
1995
Processor Type: 68LC040 Processor
Speed:		 25 MHz
1.
Processor
Upgrade:		 N/A
2.		 FPU: N/A
System Bus
Speed:		 25 MHz Lookaside Bus
Speed:		 N/A
ROM Size: 2 MB Data Path: 32-bit
Level 1 Cache: 8k Level 2 Cache: N/A
RAM Type: 70 ns DRAM card VRAM Type: Built-in
Standard RAM: 4 MB, 12 MB Maximum RAM: 36 MB
Motherboard
RAM:		 4 MB RAM Slots: 1 (PB 500
series)
Standard VRAM: 512k
3.		 Maximum VRAM: 512k
3.
Standard Hard
Drive:		 160, 240, 320
MB		 Int. Hard Drive
Type:		 SCSI
Standard
CD-ROM:		 N/A Standard Disk: 1.44 MB
(manual)
Standard Modem: 14.4k
(optional)		 Standard
Ethernet:		 AAUI-15
Case Type: Portable (Gray) Form Factor: PowerBook 520
Exp. Slots: Modem Exp. Bays
(Free):		 None
Battery Type: PB 500 Series
NiMH		 Battery Life: 2.0-3.5 hours
Built-in
Display:		 9.5″ Color
4.		 Supported
MacOS:		 7.1.1-8.1
Dimensions: 2.3 x 11.5 x 9.7
5.		 Avg. Weight: 6.4 lbs.
Original Price: $2800, $2900,
$4000		 Est. Current
Price:		 N/A
Notes: 1.
This model is somtimes designated as having a 50 MHz
processor,

since
the clock input runs at 50 MHz. However, the processor
itself

is
not “clock doubled”, so technically it is only a 25 MHz
processor.

2. Upgrades and
accelerators are available.

3. 512k of VRAM
supports an external color monitor (8-bit, 256
colors).

4. 9.5″ Color
dual-scan (8-bit, 256 colors) LCD display.

5.
In inches, height x width x depth (while closed).

6.
Photo Credit: Apple Computer, Inc.