Calculator for example, solve quadratic equations symbolically. The first graphing calculator was the Casio fx-7000G released in 1985. The two leading manufacturers, HP and TI, released increasingly feature-laden calculators during the 1980s and 1990s. At the turn of the millennium, the line between a graphing calculator and a handheld computer was not always clear, as some very advanced calculators such as the TI-89, the Voyage 200 and HP-49G could differentiate and integrate functions, solve differential equations, run word processing and PIM software, and connect by wire or IR to other calculators/computers. The HP 12c financial calculator is still produced. It was
Yamaha electric guitar models position). The controls were a five position pickup selector and master volume and master tone controls. The bridge was a TRS-Pro locking tremolo. All hardware was gold plated. Finish options were Antique Sunburst, Black Burst, Faded Blue and Violet Burst. YAMAHA began making the RGX 121 S in 2003 The RGX 420 S was introduced in 2003. The Yamaha RGX 420 is an electric guitar that, so far, has been released two times in versions "S" and "dz", featuring different paint-finishes but all the same mechanics and electronics. YAMAHA manufactured the RGX 420 SD6 (Drop 6) between 2001 and 2003