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The Apple Newton MessagePad 2100 features a 162 MHz StrongARM 110 processor, 8 MB of Mask ROM, 8 MB of RAM (4 MB of DRAM, 4 MB of Flash RAM), dual PCMCIA slots, dual-mode IrDA-beaming capabilities, and a Newton InterConnect port for multiple connectivity options, in a sleek handheld case with a 4.9 in. by 3.3 in. 16-level grayscale backlit LCD display (480x320 @ 100 dpi) for use with a provided stylus. The MessagePad 2100 is effectively identicial to the MessagePad 2000, but has more RAM. The Newton MessagePad 2100 is also notable as it is the only Newton released by the briefly-lived "Newton, Inc", an Apple spin-off company. The Newton MessagePad was one of the first series of handheld systems, or PDAs (Personal Digital Assistants), to attempt to recognize natural handwriting and use a basic form of artificial intelligence to 'tie' relevant information together. Please note that Newtons are technically not 'Macs', as they do not operate the MacOS, and instead use the NewtonOS (also developed by Apple).