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苹果不仅推出了MAC电脑，还推出过PDA掌上电脑：牛顿Newton下面介绍各代牛顿掌上电脑的参数和照片：
Newton Message Pad (OMP)

型号参数：
CPU
CPU: ARM 610
CPU Speed: 20 MHz
ROM: 4 MB
Onboard RAM: 640 kB
RAM slots: 0
Maximum RAM: 640 kB
Expansion Slots: 1 Type II PCMCIA

Video
Screen: reflective LCD
Max Resolution: 1 bit 336x240

Input/Output
Serial: 1
Speaker: mono

Networking
Modem: 9600 bps, optional

Miscellaneous
Codename: Newton
Dimensions: 7.25" H x 4.50" W x 0.75" D
Weight: 0.9 lbs.
Minimum OS: Newton OS 1.0
Maximum OS: Newton OS 1.11

Introduced: August 1993
Terminated: March 1994