The Clavinova is a long-running line of digital pianos created by the Yamaha Corporation. The name is a portmanteau of the two words Clavier meaning 'keyboard instrument' and nova meaning 'new'. It is similar in function to an acoustic piano but also includes many features common to various keyboards, such as the ability to save/load songs and also to play demo songs, including some original Yamaha compositions. Each model has the availability to play a variety of voices. More recent models can be connected to a computer via USB or wireless network for music production or interactive piano lesson programs. In 2018, the Clavinova celebrated the 35th anniversary of its invention in 1983. Technical information All current (and many past) Clavinovas (CLP and CVP-Series) feature Yamaha's 'Graded Hammer' technology, a mechanical system of small metal hammers, weighted to be similar to those of an acoustic piano, which activates a digital pressure sensor that then translates into sound. This technology has contributed to the success of the Clavinova as a more affordable substitute for an acoustic piano. The graded action is intended to reproduce more accurately the varying weights of the hammers of an acoustic piano where the hammers vary in weight from the bass section to the treble. Higher-end models, such as the CVP-600 Series from 2012, incorporate real wood keys and linear grading for added realism. The built-in synthesizer produces the sound. Early Clavinova models used FM synthesis. Later models use sample-based synthesis to produce the sound. Information comes in a MIDI or similar format either directly from the piano keyboard or a stored source (from within the piano or via a computer or external sequencer). The synthesizer can imitate a large array of acoustic instruments, electronic instruments and other sound effects. Recent models of CVP Clavinova have hundreds of such voices. These usually include many types of pianos and organs, string, percussion, brass and woodwind instruments, as well as modern and vintage synthesizer sounds, sampled effects etc. The more recent CVP models also feature many accompaniment styles, ranging from traditional dance and classical orchestration to more modern club, pop, rock, big band and jazz styles. As of July 2020, the current line of Clavinova CLP models is the CLP-700 series, and the current Clavinova CVP models are the CVP-800 series. In August 2017, Yamaha introduced a new line of tablet computer-enabled Clavinovas, the CSP series, which is designed