The bridge features touch screen controls and color readouts instead of gauges. Today, virtually all drag race delay boxes are microprocessor based with intelligent, backlit LCD readouts. The earliest angular readouts were from open vernier scales directly visible to the eye. Some incorporate a digital screen to give measurement readouts in multiple formats. ECG readouts product a waveform with different labelled features. Electrical equipment and certain radio signals may trigger false readouts. Modern catheter tip verification systems often rely on ECG readouts which correlate with tip position. The touch screen panels were equipped with electronic readouts. Most of the cockpit readouts are presented on flat-panel displays. The AMP standard includes conversion from analog readouts to a digital "glass cockpit" configuration. Gandini initially sketched a dashboard with all-digital readouts for the Countach. The accuracy of these digital readouts has been reported in USA as highly inaccurate. Some of the main types of nanosensor readouts include optical, mechanical, vibrational, or electromagnetic. All the button pads and readouts were cabled to a primitive computer. Each spacecraft has a gamma-ray detector, with readouts noted in tiny fractions of a second.