Apple 180C manual Devices, Keyboard

	Specifications	I/O Devices - 10
		I/O Devices
Keyboard		Built-in keyboard with standard Macintosh layout
		63 keys domestic; 64 keys ISO
		3.0 mm travel; 18 mm vertical pitch, 18.63 mm horizontal pitch
		Two-level tilt adjustment

Trackball

Microphone

30 mm diameter, dual button Apple Desktop Bus (ADB) interface

Electret, omnidirectional

Output voltage of 4 mV, peak to peak