The PowerBook Duo 2300c was Apple’s only PowerBook Duo based on a PowerPC CPU. To make the 2300c compatible with Duo Docks for earlier models, the 100 MHz 64-bit PowerPC 603e CPU was used on a 33 MHz 32-bit bus, which seriously compromised performance.
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Apple upped the ante by moving from the 68030 to the 68LC040 processor on the Duo 280 and 280c in May 1994. (The 68LC040 is a low power version of the 68040 with the internal FPU disabled.) Other than the CPU, this is essentially a Duo 270c.
Apple upped the ante by moving from the 68030 to the 68LC040 processor on the Duo 280 and 280c in May 1994. (The 68LC040 is a low power version of the 68040 with the internal FPU disabled.)
Introduce in October 1993, the Duo 270c added an active matrix 640 x 480 pixel 256-color screen to the Duo 230. With the improved battery, this color Duo could still run for two hours per charge.
Introduced in October 1993, the PowerBook Duo 250 added an active matrix screen to the Duo mix.
Along with the 25 MHz PowerBook Duo 210, the Duo 230 was the first dockable Mac. By eliminating the internal floppy drive (as with PowerBook 100) along with other size and weight saving measures, Apple got this one down to 4.2 pounds.
The PowerBook Duo 210 was the first dockable Mac. By eliminating the internal floppy drive (as Apple had done with the PowerBook 100) along with other size- and weight-saving measures, Apple got it down to 4.2 pounds.
