Apple 145B manual Devices, Trackball Microphone 140/ 145/170

	Specifications	I/O Devices - 7
		I/O Devices
Keyboard		Built-in standard Apple keyboard
		63 keys domestic; 64 keys ISO
		Two-level tilt adjustment

Trackball

Microphone (140/ 145/170)

30 mm diameter, dual button ADB interface

Electret, omnidirectional

Output voltage of 4 mV, peak to peak