The document provides an overview of Sharp, Toshiba, and Sony's histories, products, and financial ratios. Sharp was founded in 1912 and has expanded from pencil manufacturing into electronics. It created Japan's first TV and calculator. Toshiba was formed through mergers and focuses on infrastructure and consumer products. Sony is a large media conglomerate and manufacturer of electronics and entertainment products. All three companies face challenges like price competition and declining profits. Their financial ratios show varying levels of profitability, debt, and liquidity.