An electronic organ is an electronic keyboard instrument originally designed to imitate the sound of a pipe organ. It has developed today into two forms of the instrument, the imitation pipe organ as used in churches, and the Hammond organ-style instrument used in more popular music genres. Electronic organ – Wikipedia
A metronome is any device [...]
ICL7135 Intersil Device Information
The Intersil ICL7135 precision A/D converter, with its multiplexed BCD output and digit drivers, combines dual-slope conversion reliability with ±1 in 20,000 count accuracy and is ideally suited for the visual display DVM/DPM market. The 2.0000V full scale capability, auto-zero, and auto-polarity are combined with true ratiometric operation, almost ideal differential linearity [...]