Requirements:
	real-time display of telemetry
	off-line display of logged data
	Logging of telemetry
	Capture of logged data to disk

Input data:
	accelerometer
	barometer
	thermometer
	gps
	drogue and main continuity
	battery voltage
	time
	reported flight state
	reported events

Computed data:
	velocity (from accelerometer)
	altitude
	range
	direction

Displays:
	numeric display of current rocket status
	(graphics come later)
	text message log
