laptop by Apple

The PowerBook 140 had a physically larger passive-matrix screen than the PowerBook 100 (although it displayed the same 640 x 400 pixels), a more efficient CPU, and a 2-hour NiCad battery (the same one used on all PowerBook models from the 140 to the 180). It was replaced by the 25 MHz PowerBook 145 in August 1992.

As with all early PowerBooks, when buying one be sure it has all the memory you need (new PowerBook RAM is very difficult to locate, especially at reasonable prices).

The PB 140 has an 8 MB memory ceiling, although you can go beyond that by using Virtual Memory (slow and free) or RAM Doubler (faster, not free, and discontinued). A third option is RAM Charger 8.1 , which offers better memory management than the Mac OS.

Specs (via Low End Mac)

• Cpu: 16 MHz 68030
• Fpu: none
• Ram: 2 MB RAM, expandable to 8 MB using a special 100ns pseudostatic RAM card
• Rom: 1 MB
• Hard Drive: 20, 40, or 80 MB
• Floppy Drive: 1.4 MB double-sided
• Display: 9.8″ 1-bit 640 x 400 77 ppi passive matrix
• Code Names: Leary, Tim LC
• Adb Ports: 1 port for keyboard and mouse
• Weight: 6.8 pounds
• Serial Ports: 2 DIN-8 RS-422 ports on back of computer
• Scsi Ports: HDI30 connector on back of computer
• Power Supply: M5140 – 15W, 2 amps
• See: Online resources and links for the PowerBook 140